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CyclicSort.java
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38 lines (36 loc) · 862 Bytes
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// To sort an array in ascending and descending order using Cyclic Sort Algorithm.
import java.util.*;
class CyclicSort {
public static void main(String[] args) {
int arr1[] = {3,5,4,1,2};
int arr2[] = {3,5,4,1,2};
cyclicSortingAscending(arr1);
cyclicSortingDescending(arr2);
System.out.println(Arrays.toString(arr1));
System.out.println(Arrays.toString(arr2));
}
public static void cyclicSortingAscending(int arr[]) {
int i = 0;
while (i < arr.length) {
if (arr[i]-1 != i) {
int swap = arr[arr[i]-1];
arr[arr[i]-1] = arr[i];
arr[i] = swap;
}
else
i++;
}
}
public static void cyclicSortingDescending(int arr[]) {
int i = 0;
while (i < arr.length) {
if (i+arr[i] != arr.length) {
int swap = arr[arr.length-arr[i]];
arr[arr.length-arr[i]] = arr[i];
arr[i] = swap;
}
else
i++;
}
}
}