Computer Applications

Write a menu-driven program to display the following patterns as per the user’s choice:

(a)

1234567
12345
123
1

(b)

11111
22222
33333
44444
55555

Java

Java Nested for Loops

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Answer

import java.util.Scanner;

public class KboatPatterns
{
    public static void main(String args[]) {
        Scanner in = new Scanner(System.in);
        System.out.println("Type 1 for Pattern 1");
        System.out.println("Type 2 for Pattern 2");
        System.out.print("Enter your choice: ");
        int ch = in.nextInt();
        switch (ch) {
            case 1:
            for (int i = 7; i >= 1; i -= 2) {
                for (int j = 1; j <= i; j++) {
                    System.out.print(j);
                }
                System.out.println();
            }
            break;
            
            case 2:
            for (int i = 1; i <= 5; i++) {
                for (int j = 1; j <= 5; j++) {
                    System.out.print(i);
                }
                System.out.println();
            }
            break;
            
            default:
            System.out.println("Incorrect Choice");
        }
    }
}

Output

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