Reverse an Array

 

Program -

import java.util.Arrays;
public class reverseArray{

     public static void main(String []args){
        int arr[] = {1, 2, 3, 4, 5, 6};
        int i=0, j=arr.length-1,temp;
        while(i<j)
        {
            temp = arr[i];
            arr[i] = arr[j];
            arr[j] = temp;
            i++;
            j--;
        }
        System.out.println(Arrays.toString(arr));
     }
}

 

Video explanation -