ReverseArray.java

import java.util.*;
public class ReverseArray {
    static int [] a;
    public static void reverseIteration(){
        int start =0;
        int end  = a.length-1;
        while(start<=end){
            int temp = a[start];
            a[start] = a[end];
            a[end] = temp;
            start++;
            end--;
        }
    }

    public static void reverseRecursive(int start, int end){
        if(start<=end){
            int temp = a[start];
            a[start] = a[end];
            a[end] = temp;
            start++;
            end--;
            reverseRecursive(start, end);
        }
    }
    public static void main(String[] args) {
        a = new int []{1,2,3,4,5};
        System.out.println("Original Array" + Arrays.toString(a));
        reverseIteration();
        System.out.println("Reversed - Array(Iteration):" + Arrays.toString(a));
        reverseRecursive(0,a.length-1);
        System.out.println("Reversed Again - Array(Recursion):" + Arrays.toString(a));
    }
}