ICSE Class 9 Computer Applications Question 3 of 17

Nested for loops — Question 3

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3
Question

Question 3(i)

Write a program in Java to display the following patterns.

1
2  3
4  5  6
7  8  9  10
11 12 13 14 15
Answer
public class KboatPattern
{
    public static void main(String args[]) {
        int a = 1;
        for (int i = 1; i <= 5; i++) {
            for (int j = 1; j <= i; j++) {
                System.out.print(a++ + "\t");
            }
            System.out.println();
        }
    }
}
Output
BlueJ output of KboatPattern.java