Computer Applications
Write a program to generate a triangle or an inverted triangle till n terms based upon the user's choice.
Example 1:
Input: Type 1 for a triangle and
Type 2 for an inverted triangle
Enter your choice 1
Enter the number of terms 5
Sample 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
Enter your choice 2
Enter the number of terms 6
Sample Output:
6 6 6 6 6 6
5 5 5 5 5
4 4 4 4
3 3 3
2 2
1
Answer
import java.util.Scanner;
public class KboatPattern
{
public void choosePattern() {
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");
}
}
}
Variable Description Table
Program Explanation
Output
Related Questions
Write a program in Java to display the following pattern:
1
2 3
4 5 6
7 8 9 10
11 12 13 14 15Using the switch case statement, write a menu driven program for the following:
(a) To input a number and display only those factors of the numbers which are prime.
Sample Input: 84
Sample Output: 2, 3, 7(b) A program that displays the multiplication table from 1 to 10, as shown:
1 2 3 4 5 6 7 8 9 10
2 4 6 8 10 12 14 16 18 20
3 6 9 12 15 18 21 24 27 30
……………………………..
……………………………..
……………………………..
9 18 27 36 45 54 63 72 81 90
10 20 30 40 50 60 70 80 90 100Write a program in Java to display the following pattern:
5 4 3 2 1
5 4 3 2
5 4 3
5 4
5Using the switch statement, write a menu driven program for the following:
(a) To print the Floyd's triangle:
1
2 3
4 5 6
7 8 9 10
11 12 13 14 15(b) To display the following pattern:
I
I C
I C S
I C S EFor an incorrect option, an appropriate error message should be displayed.