Example: Convert Array into Zig-Zag Fashion in Java language

// Convert Array into Zig-Zag Fashion in Java language
import java.util.Scanner;

public class Main {

    public static int i = 1, r = 1;

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);

        int[] arru;
        int x = 0;
        // arru - it will store array elements
        // x - size of array

        System.out.print("-----enter the size of the array-----\n");
        x = in .nextInt();

        // mapping size of the array
        arru = new int[x];

        System.out.print("-----Enter the " + x + " elements one by one-----\n");
        for (int i = 0; i < x; i++) {
            arru[i] = in .nextInt();
        }

        // This will change the array position into zig-zag
        System.out.print("\n-----The zig-zag pattern-----\n");
        makeZigZag(arru, x);
        for (int i = 0; i < x; i++)
            System.out.print(arru[i] + ",  ");
        System.out.print("\n");
    }

    // It's the function to generate the zig-zag pattern
    public static void makeZigZag(int arru[], int n) {
        boolean flag = true;
        int temp;

        for (int i = 0; i <= n - 2; i++) {
            if (flag) {
                if (arru[i] > arru[i + 1]) {
                    // It will swap the values
                    temp = arru[i];
                    arru[i] = arru[i + 1];
                    arru[i + 1] = temp;
                }
            } else {
                if (arru[i] < arru[i + 1]) {
                    // It will swap the values
                    temp = arru[i];
                    arru[i] = arru[i + 1];
                    arru[i + 1] = temp;
                }
            }
            flag = !flag;
        }
    }
}