Reverse Array Elements in Java

Reverse Array Elements in Java

public class ReverseArray {

       public static void main(String[] args) {

              int[] intArr = new int[] { 1, 2, 3, 4, 5, 6, 7 };

              System.out.println("Array elements before reverse");

              displayArrayElements(intArr);

              reverseArrayElements(intArr);

              System.out.println("reversed array elements");

              displayArrayElements(intArr);

       }

       public static void displayArrayElements(int[] arr) {

              for (int temp : arr) {

                     System.out.println(temp);

              }

              System.out.println("..............................");

       }

       public static void reverseArrayElements(int[] arr) {

              int temp = 0;

              for (int start = 0, end = arr.length - 1; start < end; start++, end--) {

                     temp = arr[start];

                     arr[start] = arr[end];

                     arr[end] = temp;

              }

       }

}

output

Array elements before reverse
1
2
3
4
5
6
7
..............................
reversed array elements
7
6
5
4
3
2
1
..............................