Arrays

asList

public static List<T> asList (T... a)

Returns a fixed-size list backed by the specified array. Changes made to the array will be visible in the returned list, and changes made to the list will be visible in the array. The returned list is Serializable and implements RandomAccess.

The returned list implements the optional Collection methods, except those that would change the size of the returned list. Those methods leave the list unchanged and throw UnsupportedOperationException.

If the specified array's actual component type differs from the type parameter T, this can result in operations on the returned list throwing an ArrayStoreException.

binarySearch

public static int binarySearch (byte[] a, 
                int fromIndex, 
                int toIndex, 
                byte key)

Searches a range of the specified array of bytes for the specified value using the binary search algorithm. The range must be sorted (as by the sort(byte[], int, int) method) prior to making this call. If it is not sorted, the results are undefined. If the range contains multiple elements with the specified value, there is no guarantee which one will be found.

binarySearch

public static int binarySearch (long[] a, 
                int fromIndex, 
                int toIndex, 
                long key)

Searches a range of the specified array of longs for the specified value using the binary search algorithm. The range must be sorted (as by the sort(long[], int, int) method) prior to making this call. If it is not sorted, the results are undefined. If the range contains multiple elements with the specified value, there is no guarantee which one will be found.

binarySearch

public static int binarySearch (short[] a, 
                int fromIndex, 
                int toIndex, 
                short key)

Searches a range of the specified array of shorts for the specified value using the binary search algorithm. The range must be sorted (as by the sort(short[], int, int) method) prior to making this call. If it is not sorted, the results are undefined. If the range contains multiple elements with the specified value, there is no guarantee which one will be found.

binarySearch

public static int binarySearch (T[] a, 
                int fromIndex, 
                int toIndex, 
                T key, 
                Comparator<? super T> c)

Searches a range of the specified array for the specified object using the binary search algorithm. The range must be sorted into ascending order according to the specified comparator (as by the sort(T[], int, int, Comparator) method) prior to making this call. If it is not sorted, the results are undefined. If the range contains multiple elements equal to the specified object, there is no guarantee which one will be found.

binarySearch

public static int binarySearch (short[] a, 
                short key)

Searches the specified array of shorts for the specified value using the binary search algorithm. The array must be sorted (as by the sort(short[]) method) prior to making this call. If it is not sorted, the results are undefined. If the array contains multiple elements with the specified value, there is no guarantee which one will be found.

binarySearch

public static int binarySearch (Object[] a, 
                int fromIndex, 
                int toIndex, 
                Object key)

Searches a range of the specified array for the specified object using the binary search algorithm. The range must be sorted into ascending order according to the natural ordering of its elements (as by the sort(java.lang.Object[], int, int) method) prior to making this call. If it is not sorted, the results are undefined. (If the range contains elements that are not mutually comparable (for example, strings and integers), it cannot be sorted according to the natural ordering of its elements, hence results are undefined.) If the range contains multiple elements equal to the specified object, there is no guarantee which one will be found.

binarySearch

public static int binarySearch (int[] a, 
                int key)

Searches the specified array of ints for the specified value using the binary search algorithm. The array must be sorted (as by the sort(int[]) method) prior to making this call. If it is not sorted, the results are undefined. If the array contains multiple elements with the specified value, there is no guarantee which one will be found.

binarySearch

public static int binarySearch (double[] a, 
                double key)

Searches the specified array of doubles for the specified value using the binary search algorithm. The array must be sorted (as by the sort(double[]) method) prior to making this call. If it is not sorted, the results are undefined. If the array contains multiple elements with the specified value, there is no guarantee which one will be found. This method considers all NaN values to be equivalent and equal.

binarySearch

public static int binarySearch (float[] a, 
                float key)

Searches the specified array of floats for the specified value using the binary search algorithm. The array must be sorted (as by the sort(float[]) method) prior to making this call. If it is not sorted, the results are undefined. If the array contains multiple elements with the specified value, there is no guarantee which one will be found. This method considers all NaN values to be equivalent and equal.

binarySearch

public static int binarySearch (char[] a, 
                int fromIndex, 
                int toIndex, 
                char key)

Searches a range of the specified array of chars for the specified value using the binary search algorithm. The range must be sorted (as by the sort(char[], int, int) method) prior to making this call. If it is not sorted, the results are undefined. If the range contains multiple elements with the specified value, there is no guarantee which one will be found.

binarySearch

public static int binarySearch (long[] a, 
                long key)

Searches the specified array of longs for the specified value using the binary search algorithm. The array must be sorted (as by the sort(long[]) method) prior to making this call. If it is not sorted, the results are undefined. If the array contains multiple elements with the specified value, there is no guarantee which one will be found.

binarySearch

public static int binarySearch (float[] a, 
                int fromIndex, 
                int toIndex, 
                float key)

Searches a range of the specified array of floats for the specified value using the binary search algorithm. The range must be sorted (as by the sort(float[], int, int) method) prior to making this call. If it is not sorted, the results are undefined. If the range contains multiple elements with the specified value, there is no guarantee which one will be found. This method considers all NaN values to be equivalent and equal.

binarySearch

public static int binarySearch (int[] a, 
                int fromIndex, 
                int toIndex, 
                int key)

Searches a range of the specified array of ints for the specified value using the binary search algorithm. The range must be sorted (as by the sort(int[], int, int) method) prior to making this call. If it is not sorted, the results are undefined. If the range contains multiple elements with the specified value, there is no guarantee which one will be found.

binarySearch

public static int binarySearch (byte[] a, 
                byte key)

Searches the specified array of bytes for the specified value using the binary search algorithm. The array must be sorted (as by the sort(byte[]) method) prior to making this call. If it is not sorted, the results are undefined. If the array contains multiple elements with the specified value, there is no guarantee which one will be found.

binarySearch

public static int binarySearch (Object[] a, 
                Object key)

Searches the specified array for the specified object using the binary search algorithm. The array must be sorted into ascending order according to the natural ordering of its elements (as by the sort(java.lang.Object[]) method) prior to making this call. If it is not sorted, the results are undefined. (If the array contains elements that are not mutually comparable (for example, strings and integers), it cannot be sorted according to the natural ordering of its elements, hence results are undefined.) If the array contains multiple elements equal to the specified object, there is no guarantee which one will be found.

binarySearch

public static int binarySearch (double[] a, 
                int fromIndex, 
                int toIndex, 
                double key)

Searches a range of the specified array of doubles for the specified value using the binary search algorithm. The range must be sorted (as by the sort(double[], int, int) method) prior to making this call. If it is not sorted, the results are undefined. If the range contains multiple elements with the specified value, there is no guarantee which one will be found. This method considers all NaN values to be equivalent and equal.

binarySearch

public static int binarySearch (char[] a, 
                char key)

Searches the specified array of chars for the specified value using the binary search algorithm. The array must be sorted (as by the sort(char[]) method) prior to making this call. If it is not sorted, the results are undefined. If the array contains multiple elements with the specified value, there is no guarantee which one will be found.

binarySearch

public static int binarySearch (T[] a, 
                T key, 
                Comparator<? super T> c)

Searches the specified array for the specified object using the binary search algorithm. The array must be sorted into ascending order according to the specified comparator (as by the sort(T[], Comparator) method) prior to making this call. If it is not sorted, the results are undefined. If the array contains multiple elements equal to the specified object, there is no guarantee which one will be found.

compare

public static int compare (T[] a, 
                int aFromIndex, 
                int aToIndex, 
                T[] b, 
                int bFromIndex, 
                int bToIndex, 
                Comparator<? super T> cmp)

Compares two Object arrays lexicographically over the specified ranges.

If the two arrays, over the specified ranges, share a common prefix then the lexicographic comparison is the result of comparing with the specified comparator two elements at a relative index within the respective arrays that is the prefix length. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two range lengths. (See mismatch(java.lang.Object[], int, int, java.lang.Object[], int, int) for the definition of a common and proper prefix.)

compare

public static int compare (byte[] a, 
                int aFromIndex, 
                int aToIndex, 
                byte[] b, 
                int bFromIndex, 
                int bToIndex)

Compares two byte arrays lexicographically over the specified ranges.

If the two arrays, over the specified ranges, share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Byte.compare(byte, byte), at a relative index within the respective arrays that is the length of the prefix. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two range lengths. (See mismatch(byte[], int, int, byte[], int, int) for the definition of a common and proper prefix.)

The comparison is consistent with equals, more specifically the following holds for arrays a and b with specified ranges [aFromIndex, aToIndex) and [bFromIndex, bToIndex) respectively:

Arrays.equals(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) ==
         (Arrays.compare(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) == 0)
 

compare

public static int compare (char[] a, 
                int aFromIndex, 
                int aToIndex, 
                char[] b, 
                int bFromIndex, 
                int bToIndex)

Compares two char arrays lexicographically over the specified ranges.

If the two arrays, over the specified ranges, share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Character.compare(char, char), at a relative index within the respective arrays that is the length of the prefix. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two range lengths. (See mismatch(char[], int, int, char[], int, int) for the definition of a common and proper prefix.)

The comparison is consistent with equals, more specifically the following holds for arrays a and b with specified ranges [aFromIndex, aToIndex) and [bFromIndex, bToIndex) respectively:

Arrays.equals(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) ==
         (Arrays.compare(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) == 0)
 

compare

public static int compare (float[] a, 
                int aFromIndex, 
                int aToIndex, 
                float[] b, 
                int bFromIndex, 
                int bToIndex)

Compares two float arrays lexicographically over the specified ranges.

If the two arrays, over the specified ranges, share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Float.compare(float, float), at a relative index within the respective arrays that is the length of the prefix. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two range lengths. (See mismatch(float[], int, int, float[], int, int) for the definition of a common and proper prefix.)

The comparison is consistent with equals, more specifically the following holds for arrays a and b with specified ranges [aFromIndex, aToIndex) and [bFromIndex, bToIndex) respectively:

Arrays.equals(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) ==
         (Arrays.compare(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) == 0)
 

compare

public static int compare (float[] a, 
                float[] b)

Compares two float arrays lexicographically.

If the two arrays share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Float.compare(float, float), at an index within the respective arrays that is the prefix length. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two array lengths. (See mismatch(float[], float[]) for the definition of a common and proper prefix.)

A null array reference is considered lexicographically less than a non-null array reference. Two null array references are considered equal.

The comparison is consistent with equals, more specifically the following holds for arrays a and b:

Arrays.equals(a, b) == (Arrays.compare(a, b) == 0)
 

compare

public static int compare (short[] a, 
                int aFromIndex, 
                int aToIndex, 
                short[] b, 
                int bFromIndex, 
                int bToIndex)

Compares two short arrays lexicographically over the specified ranges.

If the two arrays, over the specified ranges, share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Short.compare(short, short), at a relative index within the respective arrays that is the length of the prefix. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two range lengths. (See mismatch(short[], int, int, short[], int, int) for the definition of a common and proper prefix.)

The comparison is consistent with equals, more specifically the following holds for arrays a and b with specified ranges [aFromIndex, aToIndex) and [bFromIndex, bToIndex) respectively:

Arrays.equals(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) ==
         (Arrays.compare(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) == 0)
 

compare

public static int compare (T[] a, 
                T[] b, 
                Comparator<? super T> cmp)

Compares two Object arrays lexicographically using a specified comparator.

If the two arrays share a common prefix then the lexicographic comparison is the result of comparing with the specified comparator two elements at an index within the respective arrays that is the prefix length. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two array lengths. (See mismatch(java.lang.Object[], java.lang.Object[]) for the definition of a common and proper prefix.)

A null array reference is considered lexicographically less than a non-null array reference. Two null array references are considered equal.

compare

public static int compare (int[] a, 
                int[] b)

Compares two int arrays lexicographically.

If the two arrays share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Integer.compare(int, int), at an index within the respective arrays that is the prefix length. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two array lengths. (See mismatch(int[], int[]) for the definition of a common and proper prefix.)

A null array reference is considered lexicographically less than a non-null array reference. Two null array references are considered equal.

The comparison is consistent with equals, more specifically the following holds for arrays a and b:

Arrays.equals(a, b) == (Arrays.compare(a, b) == 0)
 

compare

public static int compare (boolean[] a, 
                int aFromIndex, 
                int aToIndex, 
                boolean[] b, 
                int bFromIndex, 
                int bToIndex)

Compares two boolean arrays lexicographically over the specified ranges.

If the two arrays, over the specified ranges, share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Boolean.compare(boolean, boolean), at a relative index within the respective arrays that is the length of the prefix. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two range lengths. (See mismatch(boolean[], int, int, boolean[], int, int) for the definition of a common and proper prefix.)

The comparison is consistent with equals, more specifically the following holds for arrays a and b with specified ranges [aFromIndex, aToIndex) and [bFromIndex, bToIndex) respectively:

Arrays.equals(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) ==
         (Arrays.compare(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) == 0)
 

compare

public static int compare (boolean[] a, 
                boolean[] b)

Compares two boolean arrays lexicographically.

If the two arrays share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Boolean.compare(boolean, boolean), at an index within the respective arrays that is the prefix length. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two array lengths. (See mismatch(boolean[], boolean[]) for the definition of a common and proper prefix.)

A null array reference is considered lexicographically less than a non-null array reference. Two null array references are considered equal.

The comparison is consistent with equals, more specifically the following holds for arrays a and b:

Arrays.equals(a, b) == (Arrays.compare(a, b) == 0)
 

compare

public static int compare (T[] a, 
                T[] b)

Compares two Object arrays, within comparable elements, lexicographically.

If the two arrays share a common prefix then the lexicographic comparison is the result of comparing two elements of type T at an index i within the respective arrays that is the prefix length, as if by:

Comparator.nullsFirst(Comparator.<T>naturalOrder()).
         compare(a[i], b[i])
 

A null array reference is considered lexicographically less than a non-null array reference. Two null array references are considered equal. A null array element is considered lexicographically less than a non-null array element. Two null array elements are considered equal.

The comparison is consistent with equals, more specifically the following holds for arrays a and b:

Arrays.equals(a, b) == (Arrays.compare(a, b) == 0)
 

compare

public static int compare (double[] a, 
                double[] b)

Compares two double arrays lexicographically.

If the two arrays share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Double.compare(double, double), at an index within the respective arrays that is the prefix length. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two array lengths. (See mismatch(double[], double[]) for the definition of a common and proper prefix.)

A null array reference is considered lexicographically less than a non-null array reference. Two null array references are considered equal.

The comparison is consistent with equals, more specifically the following holds for arrays a and b:

Arrays.equals(a, b) == (Arrays.compare(a, b) == 0)
 

compare

public static int compare (T[] a, 
                int aFromIndex, 
                int aToIndex, 
                T[] b, 
                int bFromIndex, 
                int bToIndex)

Compares two Object arrays lexicographically over the specified ranges.

If the two arrays, over the specified ranges, share a common prefix then the lexicographic comparison is the result of comparing two elements of type T at a relative index i within the respective arrays that is the prefix length, as if by:

Comparator.nullsFirst(Comparator.<T>naturalOrder()).
         compare(a[aFromIndex + i, b[bFromIndex + i])
 

The comparison is consistent with equals, more specifically the following holds for arrays a and b with specified ranges [aFromIndex, aToIndex) and [bFromIndex, bToIndex) respectively:

Arrays.equals(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) ==
         (Arrays.compare(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) == 0)
 

compare

public static int compare (long[] a, 
                int aFromIndex, 
                int aToIndex, 
                long[] b, 
                int bFromIndex, 
                int bToIndex)

Compares two long arrays lexicographically over the specified ranges.

If the two arrays, over the specified ranges, share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Long.compare(long, long), at a relative index within the respective arrays that is the length of the prefix. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two range lengths. (See mismatch(long[], int, int, long[], int, int) for the definition of a common and proper prefix.)

The comparison is consistent with equals, more specifically the following holds for arrays a and b with specified ranges [aFromIndex, aToIndex) and [bFromIndex, bToIndex) respectively:

Arrays.equals(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) ==
         (Arrays.compare(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) == 0)
 

compare

public static int compare (int[] a, 
                int aFromIndex, 
                int aToIndex, 
                int[] b, 
                int bFromIndex, 
                int bToIndex)

Compares two int arrays lexicographically over the specified ranges.

If the two arrays, over the specified ranges, share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Integer.compare(int, int), at a relative index within the respective arrays that is the length of the prefix. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two range lengths. (See mismatch(int[], int, int, int[], int, int) for the definition of a common and proper prefix.)

The comparison is consistent with equals, more specifically the following holds for arrays a and b with specified ranges [aFromIndex, aToIndex) and [bFromIndex, bToIndex) respectively:

Arrays.equals(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) ==
         (Arrays.compare(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) == 0)
 

compare

public static int compare (long[] a, 
                long[] b)

Compares two long arrays lexicographically.

If the two arrays share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Long.compare(long, long), at an index within the respective arrays that is the prefix length. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two array lengths. (See mismatch(long[], long[]) for the definition of a common and proper prefix.)

A null array reference is considered lexicographically less than a non-null array reference. Two null array references are considered equal.

The comparison is consistent with equals, more specifically the following holds for arrays a and b:

Arrays.equals(a, b) == (Arrays.compare(a, b) == 0)
 

compare

public static int compare (byte[] a, 
                byte[] b)

Compares two byte arrays lexicographically.

If the two arrays share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Byte.compare(byte, byte), at an index within the respective arrays that is the prefix length. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two array lengths. (See mismatch(byte[], byte[]) for the definition of a common and proper prefix.)

A null array reference is considered lexicographically less than a non-null array reference. Two null array references are considered equal.

The comparison is consistent with equals, more specifically the following holds for arrays a and b:

Arrays.equals(a, b) == (Arrays.compare(a, b) == 0)
 

compare

public static int compare (double[] a, 
                int aFromIndex, 
                int aToIndex, 
                double[] b, 
                int bFromIndex, 
                int bToIndex)

Compares two double arrays lexicographically over the specified ranges.

If the two arrays, over the specified ranges, share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Double.compare(double, double), at a relative index within the respective arrays that is the length of the prefix. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two range lengths. (See mismatch(double[], int, int, double[], int, int) for the definition of a common and proper prefix.)

The comparison is consistent with equals, more specifically the following holds for arrays a and b with specified ranges [aFromIndex, aToIndex) and [bFromIndex, bToIndex) respectively:

Arrays.equals(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) ==
         (Arrays.compare(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) == 0)
 

compare

public static int compare (short[] a, 
                short[] b)

Compares two short arrays lexicographically.

If the two arrays share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Short.compare(short, short), at an index within the respective arrays that is the prefix length. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two array lengths. (See mismatch(short[], short[]) for the definition of a common and proper prefix.)

A null array reference is considered lexicographically less than a non-null array reference. Two null array references are considered equal.

The comparison is consistent with equals, more specifically the following holds for arrays a and b:

Arrays.equals(a, b) == (Arrays.compare(a, b) == 0)
 

compare

public static int compare (char[] a, 
                char[] b)

Compares two char arrays lexicographically.

If the two arrays share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Character.compare(char, char), at an index within the respective arrays that is the prefix length. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two array lengths. (See mismatch(char[], char[]) for the definition of a common and proper prefix.)

A null array reference is considered lexicographically less than a non-null array reference. Two null array references are considered equal.

The comparison is consistent with equals, more specifically the following holds for arrays a and b:

Arrays.equals(a, b) == (Arrays.compare(a, b) == 0)
 

compareUnsigned

public static int compareUnsigned (byte[] a, 
                int aFromIndex, 
                int aToIndex, 
                byte[] b, 
                int bFromIndex, 
                int bToIndex)

Compares two byte arrays lexicographically over the specified ranges, numerically treating elements as unsigned.

If the two arrays, over the specified ranges, share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Byte.compareUnsigned(byte, byte), at a relative index within the respective arrays that is the length of the prefix. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two range lengths. (See mismatch(byte[], int, int, byte[], int, int) for the definition of a common and proper prefix.)

compareUnsigned

public static int compareUnsigned (int[] a, 
                int[] b)

Compares two int arrays lexicographically, numerically treating elements as unsigned.

If the two arrays share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Integer.compareUnsigned(int, int), at an index within the respective arrays that is the prefix length. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two array lengths. (See mismatch(int[], int[]) for the definition of a common and proper prefix.)

A null array reference is considered lexicographically less than a non-null array reference. Two null array references are considered equal.

compareUnsigned

public static int compareUnsigned (short[] a, 
                short[] b)

Compares two short arrays lexicographically, numerically treating elements as unsigned.

If the two arrays share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Short.compareUnsigned(short, short), at an index within the respective arrays that is the prefix length. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two array lengths. (See mismatch(short[], short[]) for the definition of a common and proper prefix.)

A null array reference is considered lexicographically less than a non-null array reference. Two null array references are considered equal.

compareUnsigned

public static int compareUnsigned (int[] a, 
                int aFromIndex, 
                int aToIndex, 
                int[] b, 
                int bFromIndex, 
                int bToIndex)

Compares two int arrays lexicographically over the specified ranges, numerically treating elements as unsigned.

If the two arrays, over the specified ranges, share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Integer.compareUnsigned(int, int), at a relative index within the respective arrays that is the length of the prefix. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two range lengths. (See mismatch(int[], int, int, int[], int, int) for the definition of a common and proper prefix.)

compareUnsigned

public static int compareUnsigned (short[] a, 
                int aFromIndex, 
                int aToIndex, 
                short[] b, 
                int bFromIndex, 
                int bToIndex)

Compares two short arrays lexicographically over the specified ranges, numerically treating elements as unsigned.

If the two arrays, over the specified ranges, share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Short.compareUnsigned(short, short), at a relative index within the respective arrays that is the length of the prefix. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two range lengths. (See mismatch(short[], int, int, short[], int, int) for the definition of a common and proper prefix.)

compareUnsigned

public static int compareUnsigned (byte[] a, 
                byte[] b)

Compares two byte arrays lexicographically, numerically treating elements as unsigned.

If the two arrays share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Byte.compareUnsigned(byte, byte), at an index within the respective arrays that is the prefix length. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two array lengths. (See mismatch(byte[], byte[]) for the definition of a common and proper prefix.)

A null array reference is considered lexicographically less than a non-null array reference. Two null array references are considered equal.

compareUnsigned

public static int compareUnsigned (long[] a, 
                long[] b)

Compares two long arrays lexicographically, numerically treating elements as unsigned.

If the two arrays share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Long.compareUnsigned(long, long), at an index within the respective arrays that is the prefix length. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two array lengths. (See mismatch(long[], long[]) for the definition of a common and proper prefix.)

A null array reference is considered lexicographically less than a non-null array reference. Two null array references are considered equal.

compareUnsigned

public static int compareUnsigned (long[] a, 
                int aFromIndex, 
                int aToIndex, 
                long[] b, 
                int bFromIndex, 
                int bToIndex)

Compares two long arrays lexicographically over the specified ranges, numerically treating elements as unsigned.

If the two arrays, over the specified ranges, share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Long.compareUnsigned(long, long), at a relative index within the respective arrays that is the length of the prefix. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two range lengths. (See mismatch(long[], int, int, long[], int, int) for the definition of a common and proper prefix.)

copyOf

public static float[] copyOf (float[] original, 
                int newLength)

Copies the specified array, truncating or padding with zeros (if necessary) so the copy has the specified length. For all indices that are valid in both the original array and the copy, the two arrays will contain identical values. For any indices that are valid in the copy but not the original, the copy will contain 0f. Such indices will exist if and only if the specified length is greater than that of the original array.

copyOf

public static T[] copyOf (T[] original, 
                int newLength)

Copies the specified array, truncating or padding with nulls (if necessary) so the copy has the specified length. For all indices that are valid in both the original array and the copy, the two arrays will contain identical values. For any indices that are valid in the copy but not the original, the copy will contain null. Such indices will exist if and only if the specified length is greater than that of the original array. The resulting array is of exactly the same class as the original array.

copyOf

public static char[] copyOf (char[] original, 
                int newLength)

Copies the specified array, truncating or padding with null characters (if necessary) so the copy has the specified length. For all indices that are valid in both the original array and the copy, the two arrays will contain identical values. For any indices that are valid in the copy but not the original, the copy will contain '\u0000'. Such indices will exist if and only if the specified length is greater than that of the original array.

copyOf

public static double[] copyOf (double[] original, 
                int newLength)

Copies the specified array, truncating or padding with zeros (if necessary) so the copy has the specified length. For all indices that are valid in both the original array and the copy, the two arrays will contain identical values. For any indices that are valid in the copy but not the original, the copy will contain 0d. Such indices will exist if and only if the specified length is greater than that of the original array.

copyOf

public static boolean[] copyOf (boolean[] original, 
                int newLength)

Copies the specified array, truncating or padding with false (if necessary) so the copy has the specified length. For all indices that are valid in both the original array and the copy, the two arrays will contain identical values. For any indices that are valid in the copy but not the original, the copy will contain false. Such indices will exist if and only if the specified length is greater than that of the original array.

copyOf

public static int[] copyOf (int[] original, 
                int newLength)

Copies the specified array, truncating or padding with zeros (if necessary) so the copy has the specified length. For all indices that are valid in both the original array and the copy, the two arrays will contain identical values. For any indices that are valid in the copy but not the original, the copy will contain 0. Such indices will exist if and only if the specified length is greater than that of the original array.

copyOf

public static long[] copyOf (long[] original, 
                int newLength)

Copies the specified array, truncating or padding with zeros (if necessary) so the copy has the specified length. For all indices that are valid in both the original array and the copy, the two arrays will contain identical values. For any indices that are valid in the copy but not the original, the copy will contain 0L. Such indices will exist if and only if the specified length is greater than that of the original array.

copyOf

public static short[] copyOf (short[] original, 
                int newLength)

Copies the specified array, truncating or padding with zeros (if necessary) so the copy has the specified length. For all indices that are valid in both the original array and the copy, the two arrays will contain identical values. For any indices that are valid in the copy but not the original, the copy will contain (short)0. Such indices will exist if and only if the specified length is greater than that of the original array.

copyOf

public static T[] copyOf (U[] original, 
                int newLength, 
                Class<? extends T[]> newType)

Copies the specified array, truncating or padding with nulls (if necessary) so the copy has the specified length. For all indices that are valid in both the original array and the copy, the two arrays will contain identical values. For any indices that are valid in the copy but not the original, the copy will contain null. Such indices will exist if and only if the specified length is greater than that of the original array. The resulting array is of the class newType.

copyOf

public static byte[] copyOf (byte[] original, 
                int newLength)

Copies the specified array, truncating or padding with zeros (if necessary) so the copy has the specified length. For all indices that are valid in both the original array and the copy, the two arrays will contain identical values. For any indices that are valid in the copy but not the original, the copy will contain (byte)0. Such indices will exist if and only if the specified length is greater than that of the original array.

copyOfRange

public static double[] copyOfRange (double[] original, 
                int from, 
                int to)

Copies the specified range of the specified array into a new array. The initial index of the range (from) must lie between zero and original.length, inclusive. The value at original[from] is placed into the initial element of the copy (unless from == original.length or from == to). Values from subsequent elements in the original array are placed into subsequent elements in the copy. The final index of the range (to), which must be greater than or equal to from, may be greater than original.length, in which case 0d is placed in all elements of the copy whose index is greater than or equal to original.length - from. The length of the returned array will be to - from.

copyOfRange

public static float[] copyOfRange (float[] original, 
                int from, 
                int to)

Copies the specified range of the specified array into a new array. The initial index of the range (from) must lie between zero and original.length, inclusive. The value at original[from] is placed into the initial element of the copy (unless from == original.length or from == to). Values from subsequent elements in the original array are placed into subsequent elements in the copy. The final index of the range (to), which must be greater than or equal to from, may be greater than original.length, in which case 0f is placed in all elements of the copy whose index is greater than or equal to original.length - from. The length of the returned array will be to - from.

copyOfRange

public static T[] copyOfRange (U[] original, 
                int from, 
                int to, 
                Class<? extends T[]> newType)

Copies the specified range of the specified array into a new array. The initial index of the range (from) must lie between zero and original.length, inclusive. The value at original[from] is placed into the initial element of the copy (unless from == original.length or from == to). Values from subsequent elements in the original array are placed into subsequent elements in the copy. The final index of the range (to), which must be greater than or equal to from, may be greater than original.length, in which case null is placed in all elements of the copy whose index is greater than or equal to original.length - from. The length of the returned array will be to - from. The resulting array is of the class newType.

copyOfRange

public static T[] copyOfRange (T[] original, 
                int from, 
                int to)

Copies the specified range of the specified array into a new array. The initial index of the range (from) must lie between zero and original.length, inclusive. The value at original[from] is placed into the initial element of the copy (unless from == original.length or from == to). Values from subsequent elements in the original array are placed into subsequent elements in the copy. The final index of the range (to), which must be greater than or equal to from, may be greater than original.length, in which case null is placed in all elements of the copy whose index is greater than or equal to original.length - from. The length of the returned array will be to - from.

The resulting array is of exactly the same class as the original array.

copyOfRange

public static char[] copyOfRange (char[] original, 
                int from, 
                int to)

Copies the specified range of the specified array into a new array. The initial index of the range (from) must lie between zero and original.length, inclusive. The value at original[from] is placed into the initial element of the copy (unless from == original.length or from == to). Values from subsequent elements in the original array are placed into subsequent elements in the copy. The final index of the range (to), which must be greater than or equal to from, may be greater than original.length, in which case '\u0000' is placed in all elements of the copy whose index is greater than or equal to original.length - from. The length of the returned array will be to - from.

copyOfRange

public static long[] copyOfRange (long[] original, 
                int from, 
                int to)

Copies the specified range of the specified array into a new array. The initial index of the range (from) must lie between zero and original.length, inclusive. The value at original[from] is placed into the initial element of the copy (unless from == original.length or from == to). Values from subsequent elements in the original array are placed into subsequent elements in the copy. The final index of the range (to), which must be greater than or equal to from, may be greater than original.length, in which case 0L is placed in all elements of the copy whose index is greater than or equal to original.length - from. The length of the returned array will be to - from.

copyOfRange

public static int[] copyOfRange (int[] original, 
                int from, 
                int to)

Copies the specified range of the specified array into a new array. The initial index of the range (from) must lie between zero and original.length, inclusive. The value at original[from] is placed into the initial element of the copy (unless from == original.length or from == to). Values from subsequent elements in the original array are placed into subsequent elements in the copy. The final index of the range (to), which must be greater than or equal to from, may be greater than original.length, in which case 0 is placed in all elements of the copy whose index is greater than or equal to original.length - from. The length of the returned array will be to - from.

copyOfRange

public static boolean[] copyOfRange (boolean[] original, 
                int from, 
                int to)

Copies the specified range of the specified array into a new array. The initial index of the range (from) must lie between zero and original.length, inclusive. The value at original[from] is placed into the initial element of the copy (unless from == original.length or from == to). Values from subsequent elements in the original array are placed into subsequent elements in the copy. The final index of the range (to), which must be greater than or equal to from, may be greater than original.length, in which case false is placed in all elements of the copy whose index is greater than or equal to original.length - from. The length of the returned array will be to - from.

copyOfRange

public static short[] copyOfRange (short[] original, 
                int from, 
                int to)

Copies the specified range of the specified array into a new array. The initial index of the range (from) must lie between zero and original.length, inclusive. The value at original[from] is placed into the initial element of the copy (unless from == original.length or from == to). Values from subsequent elements in the original array are placed into subsequent elements in the copy. The final index of the range (to), which must be greater than or equal to from, may be greater than original.length, in which case (short)0 is placed in all elements of the copy whose index is greater than or equal to original.length - from. The length of the returned array will be to - from.

copyOfRange

public static byte[] copyOfRange (byte[] original, 
                int from, 
                int to)

Copies the specified range of the specified array into a new array. The initial index of the range (from) must lie between zero and original.length, inclusive. The value at original[from] is placed into the initial element of the copy (unless from == original.length or from == to). Values from subsequent elements in the original array are placed into subsequent elements in the copy. The final index of the range (to), which must be greater than or equal to from, may be greater than original.length, in which case (byte)0 is placed in all elements of the copy whose index is greater than or equal to original.length - from. The length of the returned array will be to - from.

deepEquals

public static boolean deepEquals (Object[] a1, 
                Object[] a2)

Returns true if the two specified arrays are deeply equal to one another. Unlike the equals(java.lang.Object[], java.lang.Object[]) method, this method is appropriate for use with nested arrays of arbitrary depth.

Two array references are considered deeply equal if both are null, or if they refer to arrays that contain the same number of elements and all corresponding pairs of elements in the two arrays are deeply equal.

Two possibly null elements e1 and e2 are deeply equal if any of the following conditions hold:

• e1 and e2 are both arrays of object reference types, and Arrays.deepEquals(e1, e2) would return true
• e1 and e2 are arrays of the same primitive type, and the appropriate overloading of Arrays.equals(e1, e2) would return true.
• e1 == e2
• e1.equals(e2) would return true.

If either of the specified arrays contain themselves as elements either directly or indirectly through one or more levels of arrays, the behavior of this method is undefined.

deepHashCode

public static int deepHashCode (Object[] a)

Returns a hash code based on the "deep contents" of the specified array. If the array contains other arrays as elements, the hash code is based on their contents and so on, ad infinitum. It is therefore unacceptable to invoke this method on an array that contains itself as an element, either directly or indirectly through one or more levels of arrays. The behavior of such an invocation is undefined.

For any two arrays a and b such that Arrays.deepEquals(a, b), it is also the case that Arrays.deepHashCode(a) == Arrays.deepHashCode(b).

The computation of the value returned by this method is similar to that of the value returned by List.hashCode() on a list containing the same elements as a in the same order, with one difference: If an element e of a is itself an array, its hash code is computed not by calling e.hashCode(), but as by calling the appropriate overloading of Arrays.hashCode(e) if e is an array of a primitive type, or as by calling Arrays.deepHashCode(e) recursively if e is an array of a reference type. If a is null, this method returns 0.

deepToString

public static String deepToString (Object[] a)

Returns a string representation of the "deep contents" of the specified array. If the array contains other arrays as elements, the string representation contains their contents and so on. This method is designed for converting multidimensional arrays to strings.

The string representation consists of a list of the array's elements, enclosed in square brackets ("[]"). Adjacent elements are separated by the characters ", " (a comma followed by a space). Elements are converted to strings as by String.valueOf(Object), unless they are themselves arrays.

If an element e is an array of a primitive type, it is converted to a string as by invoking the appropriate overloading of Arrays.toString(e). If an element e is an array of a reference type, it is converted to a string as by invoking this method recursively.

To avoid infinite recursion, if the specified array contains itself as an element, or contains an indirect reference to itself through one or more levels of arrays, the self-reference is converted to the string "[...]". For example, an array containing only a reference to itself would be rendered as "[[...]]".

This method returns "null" if the specified array is null.

equals

public static boolean equals (double[] a, 
                double[] a2)

Returns true if the two specified arrays of doubles are equal to one another. Two arrays are considered equal if both arrays contain the same number of elements, and all corresponding pairs of elements in the two arrays are equal. In other words, two arrays are equal if they contain the same elements in the same order. Also, two array references are considered equal if both are null. Two doubles d1 and d2 are considered equal if:

    Double.valueOf(d1).equals(Double.valueOf(d2))

equals

public static boolean equals (long[] a, 
                long[] a2)

Returns true if the two specified arrays of longs are equal to one another. Two arrays are considered equal if both arrays contain the same number of elements, and all corresponding pairs of elements in the two arrays are equal. In other words, two arrays are equal if they contain the same elements in the same order. Also, two array references are considered equal if both are null.

equals

public static boolean equals (short[] a, 
                int aFromIndex, 
                int aToIndex, 
                short[] b, 
                int bFromIndex, 
                int bToIndex)

Returns true if the two specified arrays of shorts, over the specified ranges, are equal to one another.

Two arrays are considered equal if the number of elements covered by each range is the same, and all corresponding pairs of elements over the specified ranges in the two arrays are equal. In other words, two arrays are equal if they contain, over the specified ranges, the same elements in the same order.

equals

public static boolean equals (char[] a, 
                char[] a2)

Returns true if the two specified arrays of chars are equal to one another. Two arrays are considered equal if both arrays contain the same number of elements, and all corresponding pairs of elements in the two arrays are equal. In other words, two arrays are equal if they contain the same elements in the same order. Also, two array references are considered equal if both are null.

equals

public static boolean equals (float[] a, 
                int aFromIndex, 
                int aToIndex, 
                float[] b, 
                int bFromIndex, 
                int bToIndex)

Returns true if the two specified arrays of floats, over the specified ranges, are equal to one another.

Two arrays are considered equal if the number of elements covered by each range is the same, and all corresponding pairs of elements over the specified ranges in the two arrays are equal. In other words, two arrays are equal if they contain, over the specified ranges, the same elements in the same order.

Two floats f1 and f2 are considered equal if:

    Float.valueOf(f1).equals(Float.valueOf(f2))

equals

public static boolean equals (int[] a, 
                int aFromIndex, 
                int aToIndex, 
                int[] b, 
                int bFromIndex, 
                int bToIndex)

Returns true if the two specified arrays of ints, over the specified ranges, are equal to one another.

Two arrays are considered equal if the number of elements covered by each range is the same, and all corresponding pairs of elements over the specified ranges in the two arrays are equal. In other words, two arrays are equal if they contain, over the specified ranges, the same elements in the same order.

equals

public static boolean equals (float[] a, 
                float[] a2)

Returns true if the two specified arrays of floats are equal to one another. Two arrays are considered equal if both arrays contain the same number of elements, and all corresponding pairs of elements in the two arrays are equal. In other words, two arrays are equal if they contain the same elements in the same order. Also, two array references are considered equal if both are null. Two floats f1 and f2 are considered equal if:

    Float.valueOf(f1).equals(Float.valueOf(f2))

equals

public static boolean equals (short[] a, 
                short[] a2)

Returns true if the two specified arrays of shorts are equal to one another. Two arrays are considered equal if both arrays contain the same number of elements, and all corresponding pairs of elements in the two arrays are equal. In other words, two arrays are equal if they contain the same elements in the same order. Also, two array references are considered equal if both are null.

equals

public static boolean equals (byte[] a, 
                byte[] a2)

Returns true if the two specified arrays of bytes are equal to one another. Two arrays are considered equal if both arrays contain the same number of elements, and all corresponding pairs of elements in the two arrays are equal. In other words, two arrays are equal if they contain the same elements in the same order. Also, two array references are considered equal if both are null.

equals

public static boolean equals (T[] a, 
                T[] a2, 
                Comparator<? super T> cmp)

Returns true if the two specified arrays of Objects are equal to one another.

Two arrays are considered equal if both arrays contain the same number of elements, and all corresponding pairs of elements in the two arrays are equal. In other words, the two arrays are equal if they contain the same elements in the same order. Also, two array references are considered equal if both are null.

Two objects e1 and e2 are considered equal if, given the specified comparator, cmp.compare(e1, e2) == 0.

equals

public static boolean equals (byte[] a, 
                int aFromIndex, 
                int aToIndex, 
                byte[] b, 
                int bFromIndex, 
                int bToIndex)

Returns true if the two specified arrays of bytes, over the specified ranges, are equal to one another.

Two arrays are considered equal if the number of elements covered by each range is the same, and all corresponding pairs of elements over the specified ranges in the two arrays are equal. In other words, two arrays are equal if they contain, over the specified ranges, the same elements in the same order.

equals

public static boolean equals (boolean[] a, 
                int aFromIndex, 
                int aToIndex, 
                boolean[] b, 
                int bFromIndex, 
                int bToIndex)

Returns true if the two specified arrays of booleans, over the specified ranges, are equal to one another.

Two arrays are considered equal if the number of elements covered by each range is the same, and all corresponding pairs of elements over the specified ranges in the two arrays are equal. In other words, two arrays are equal if they contain, over the specified ranges, the same elements in the same order.

equals

public static boolean equals (Object[] a, 
                int aFromIndex, 
                int aToIndex, 
                Object[] b, 
                int bFromIndex, 
                int bToIndex)

Returns true if the two specified arrays of Objects, over the specified ranges, are equal to one another.

Two arrays are considered equal if the number of elements covered by each range is the same, and all corresponding pairs of elements over the specified ranges in the two arrays are equal. In other words, two arrays are equal if they contain, over the specified ranges, the same elements in the same order.

Two objects e1 and e2 are considered equal if Objects.equals(e1, e2).

equals

public static boolean equals (double[] a, 
                int aFromIndex, 
                int aToIndex, 
                double[] b, 
                int bFromIndex, 
                int bToIndex)

Returns true if the two specified arrays of doubles, over the specified ranges, are equal to one another.

Two arrays are considered equal if the number of elements covered by each range is the same, and all corresponding pairs of elements over the specified ranges in the two arrays are equal. In other words, two arrays are equal if they contain, over the specified ranges, the same elements in the same order.

Two doubles d1 and d2 are considered equal if:

    Double.valueOf(d1).equals(Double.valueOf(d2))

equals

public static boolean equals (Object[] a, 
                Object[] a2)

Returns true if the two specified arrays of Objects are equal to one another. The two arrays are considered equal if both arrays contain the same number of elements, and all corresponding pairs of elements in the two arrays are equal. Two objects e1 and e2 are considered equal if Objects.equals(e1, e2). In other words, the two arrays are equal if they contain the same elements in the same order. Also, two array references are considered equal if both are null.

equals

public static boolean equals (char[] a, 
                int aFromIndex, 
                int aToIndex, 
                char[] b, 
                int bFromIndex, 
                int bToIndex)

Returns true if the two specified arrays of chars, over the specified ranges, are equal to one another.

Two arrays are considered equal if the number of elements covered by each range is the same, and all corresponding pairs of elements over the specified ranges in the two arrays are equal. In other words, two arrays are equal if they contain, over the specified ranges, the same elements in the same order.