IntUtils (Bouncy Castle Library 1.52 API Specification)

org.bouncycastle.pqc.math.linearalgebra

## Class IntUtils

- java.lang.Object
- - org.bouncycastle.pqc.math.linearalgebra.IntUtils

-     public final class IntUtils
      extends java.lang.Object

- - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `static int[]` | `clone(int[] array)` Return a clone of the given int array.
    `static boolean` | `equals(int[] left, int[] right)` Compare two int arrays.
    `static void` | `fill(int[] array, int value)` Fill the given int array with the given value.
    `static void` | `quicksort(int[] source)` Sorts this array of integers according to the Quicksort algorithm.
    `static void` | `quicksort(int[] source, int left, int right)` Sort a subarray of a source array.
    `static int[]` | `subArray(int[] input, int start, int end)` Generates a subarray of a given int array.
    `static java.math.BigInteger[]` | `toFlexiBigIntArray(int[] input)` Convert an int array to a `FlexiBigInt` array.
    `static java.lang.String` | `toHexString(int[] input)`
    `static java.lang.String` | `toString(int[] input)`

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Method Detail

    - #### equals

          public static boolean equals(int[] left,
                       int[] right)

      Compare two int arrays. No null checks are performed.
      Parameters:
        `left` - the first int array
        `right` - the second int array
      Returns:
        the result of the comparison

    - #### clone

          public static int[] clone(int[] array)

      Return a clone of the given int array. No null checks are performed.
      Parameters:
        `array` - the array to clone
      Returns:
        the clone of the given array

    - #### fill

          public static void fill(int[] array,
                  int value)

      Fill the given int array with the given value.
      Parameters:
        `array` - the array
        `value` - the value

    - #### quicksort

          public static void quicksort(int[] source)

      Sorts this array of integers according to the Quicksort algorithm. After calling this method this array is sorted in ascending order with the smallest integer taking position 0 in the array.

      This implementation is based on the quicksort algorithm as described in `Data Structures In Java` by Thomas A. Standish, Chapter 10, ISBN 0-201-30564-X.

      Parameters:
        `source` - the array of integers that needs to be sorted.

    - #### quicksort

          public static void quicksort(int[] source,
                       int left,
                       int right)

      Sort a subarray of a source array. The subarray is specified by its start and end index.
      Parameters:
        `source` - the int array to be sorted
        `left` - the start index of the subarray
        `right` - the end index of the subarray

    - #### subArray

          public static int[] subArray(int[] input,
                       int start,
                       int end)

      Generates a subarray of a given int array.
      Parameters:
        `input` - - the input int array
        `start` - - the start index
        `end` - - the end index
      Returns:
        a subarray of `input`, ranging from `start` to `end`

    - #### toFlexiBigIntArray

          public static java.math.BigInteger[] toFlexiBigIntArray(int[] input)

      Convert an int array to a `FlexiBigInt` array.
      Parameters:
        `input` - the int array
      Returns:
        the `FlexiBigInt` array

    - #### toString

          public static java.lang.String toString(int[] input)

      Parameters:
        `input` - an int array
      Returns:
        a human readable form of the given int array

    - #### toHexString

          public static java.lang.String toHexString(int[] input)

      Parameters:
        `input` - an int arary
      Returns:
        the int array as hex string