SelectionSort.java

//Program for Selection Sort using max element
import java.util.Arrays;

public class Main {
    public static void main(String[] args) {
        int[] arr = {4,5,1,2,3};
        selectionSort(arr);
        System.out.println(Arrays.toString(arr));
    }

    static void selectionSort(int[] arr){
        for (int i = 0; i < arr.length; i++) {
            //find the max ele the swap it with correct index
            int last = arr.length - i - 1;
            int maxIndex = getMaxIndex(arr,0,last);
            swapArray(arr,maxIndex,last);
        }
    }

    static void swapArray(int[] arr,int first,int second){
        int temp = arr[first];
        arr[first] = arr[second];
        arr[second] = temp;
    }
    private static int getMaxIndex(int[] arr,int start,int end){
        int max = start;
        for (int i = 0; i <= end; i++) {
            if(arr[max] < arr[i]){
                max = i;
            }
        }
        return max;
    }
}