NumberedFlag.java

/**
 *
 * Print numbered Flag
 * 1
 * 2 3
 * 4 5 6
 * 7 8 9 10
 * 11 12 13 14 15
 *
 */

package com.basic.practice;

public class NumberedFlag {
    public static void main(String[] args) {
        int num = 1;
        for (int i = 0; i < 5; i++) {
            for (int j = 0; j <= i; j++) {
                System.out.print(num + " ");
                num++;
            }
            System.out.println("");
        }
    }
}