Question

Using the switch statement, write a menu driven program for the following:

(a)

5

5 4

5 4 3

5 4 3 2

5 4 3 2 1

(b) To display the following pattern:

1 2 3 4 #

1 2 3 # 5

1 2 # 4 5

1 # 3 4 5

# 2 3 4 5

For an incorrect option, an appropriate error message should be displayed.​

Answer 1

Answer:

import java.util.Scanner;

public class KboatPattern

{

public void choosePattern() {

Scanner in = new Scanner(System.in);

System.out.println("Type 1 for Floyd's triangle");

System.out.println("Type 2 for an ICSE pattern");

System.out.print("Enter your choice: ");

int ch = in.nextInt();

switch (ch) {

case 1:

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();

}

break;

case 2:

String s = "ICSE";

for (int i = 0; i < s.length(); i++) {

for (int j = 0; j <= i; j++) {

System.out.print(s.charAt(j) + " ");

}

System.out.println();

}

break;

default:

System.out.println("