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BogoSort.java

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package Sorts;

import java.util.Random;

/**

* @author Podshivalov Nikita (https://github.com/nikitap492)

* @see SortAlgorithm

*/

public class BogoSort implements SortAlgorithm {

private static final Random random = new Random();

private static <T extends Comparable<T>> boolean isSorted(T[] array) {

for (int i = 0; i < array.length - 1; i++) {

if (SortUtils.less(array[i + 1], array[i])) return false;

}

return true;

}

// Randomly shuffles the array

private static <T> void nextPermutation(T[] array) {

int length = array.length;

for (int i = 0; i < array.length; i++) {

int randomIndex = i + random.nextInt(length - i);

SortUtils.swap(array, randomIndex, i);

}

}

public <T extends Comparable<T>> T[] sort(T[] array) {

while (!isSorted(array)) {

nextPermutation(array);

}

return array;

}

// Driver Program

public static void main(String[] args) {

// Integer Input

Integer[] integers = {4, 23, 6, 78, 1, 54, 231, 9, 12};

BogoSort bogoSort = new BogoSort();

// print a sorted array

SortUtils.print(bogoSort.sort(integers));

// String Input

String[] strings = {"c", "a", "e", "b", "d"};

SortUtils.print(bogoSort.sort(strings));

}

}