ICSE Class 10 Computer Applications
Question 17 of 22
Nested for loops — Question 17
Back to all questions 17
Question Question 6
Write a program to generate a triangle or an inverted triangle till n terms based upon the user's choice of triangle to be displayed.
Example 1
Input:
Type 1 for a triangle and type 2 for an inverted triangle
1
Enter the number of terms
5
Output:
1
2 2
3 3 3
4 4 4 4
5 5 5 5 5
Example 2
Input:
Type 1 for a triangle and type 2 for an inverted triangle
2
Enter the number of terms
6
Output:
6 6 6 6 6 6
5 5 5 5 5
4 4 4 4
3 3 3
2 2
1
import java.util.Scanner;
public class KboatPattern
{
public static void main(String args[]) {
Scanner in = new Scanner(System.in);
System.out.println("Type 1 for a triangle");
System.out.println("Type 2 for an inverted triangle");
System.out.print("Enter your choice: ");
int ch = in.nextInt();
System.out.print("Enter the number of terms: ");
int n = in.nextInt();
switch (ch) {
case 1:
for (int i = 1; i <= n; i++) {
for (int j = 1; j <= i; j++) {
System.out.print(i + " ");
}
System.out.println();
}
break;
case 2:
for (int i = n; i > 0; i--) {
for (int j = 1; j <= i; j++) {
System.out.print(i + " ");
}
System.out.println();
}
break;
default:
System.out.println("Incorrect Choice");
}
}
}Output
