Write a menu driven program to display the pattern as per user’s choice.
Pattern 1
ABCDE
ABCD
ABC
AB
A
Pattern 2
B
LL
UUU
EEEE
For an incorrect option, an appropriate error message should be displayed.
import java.util.Scanner;
public class RansariMenuPattern
{
public static void main(String args[]) {
Scanner in = new Scanner(System.in);
System.out.println("Enter 1 for pattern 1");
System.out.println("Enter 2 for Pattern 2");
System.out.print("Enter your choice: ");
int choice = in.nextInt();
switch (choice) {
case 1:
for (int i = 69; i >= 65; i--) {
for (int j = 65; j <= i; j++) {
System.out.print((char)j);
}
System.out.println();
}
break;
case 2:
String word = "BLUE";
int len = word.length();
for(int i = 0; i < len; i++) {
for(int j = 0; j <= i; j++) {
System.out.print(word.charAt(i));
}
System.out.println();
}
break;
default:
System.out.println("Incorrect choice");
break;
}
}
}
Enter 1 for pattern 1
Enter 2 for Pattern 2
Enter your choice: 1
ABCDE
ABCD
ABC
AB
A
Press any key to continue . . .
Enter 1 for pattern 1
Enter 2 for Pattern 2
Enter your choice: 2
B
LL
UUU
EEEE
Press any key to continue . . .
First understand the algorithm carefully. Then study the program line-by-line and compare it with the output. Finally, review the explanation section to strengthen your logic and programming understanding.
Rewrite the program without looking at the code. Modify values, conditions or logic and run it again. This helps improve confidence and strengthens coding skills much faster.