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cyclic sort of array in java

18-511 D VINAY SEKHAR REDDY answered on September 14, 2022 Popularity 3/10 Helpfulness 1/10

answer cyclic sort of array in java

cyclic sort of array in java

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import java.util.*;
import java.lang.*;
 
class GFG {
    // Function sort the array using Cycle sort
    public static void cycleSort(int arr[], int n)
    {
        // count number of memory writes
        int writes = 0;
 
        // traverse array elements and put it to on
        // the right place
        for (int cycle_start = 0; cycle_start <= n - 2; cycle_start++) {
            // initialize item as starting point
            int item = arr[cycle_start];
 
            // Find position where we put the item. We basically
            // count all smaller elements on right side of item.
            int pos = cycle_start;
            for (int i = cycle_start + 1; i < n; i++)
                if (arr[i] < item)
                    pos++;
 
            // If item is already in correct position
            if (pos == cycle_start)
                continue;
 
            // ignore all duplicate elements
            while (item == arr[pos])
                pos += 1;
 
            // put the item to it's right position
            if (pos != cycle_start) {
                int temp = item;
                item = arr[pos];
                arr[pos] = temp;
                writes++;
            }
 
            // Rotate rest of the cycle
            while (pos != cycle_start) {
                pos = cycle_start;
 
                // Find position where we put the element
                for (int i = cycle_start + 1; i < n; i++)
                    if (arr[i] < item)
                        pos += 1;
 
                // ignore all duplicate elements
                while (item == arr[pos])
                    pos += 1;
 
                // put the item to it's right position
                if (item != arr[pos]) {
                    int temp = item;
                    item = arr[pos];
                    arr[pos] = temp;
                    writes++;
                }
            }
        }
    }
 
    // Driver program to test above function
    public static void main(String[] args)
    {
        int arr[] = { 1, 8, 3, 9, 10, 10, 2, 4 };
        int n = arr.length;
        cycleSort(arr, n);
 
        System.out.println("After sort : ");
        for (int i = 0; i < n; i++)
            System.out.print(arr[i] + " ");
    }
}

Popularity 3/10 Helpfulness 1/10 Language java

Source: Grepper

Tags: cyclic java

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Contributed on Sep 14 2022

18-511 D VINAY SEKHAR REDDY

0 Answers Avg Quality 2/10

cyclic sort of array in java

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