Java Program to Print the Multiplication Table in Triangular Form

In this article, we will understand how to print multiplication table in triangular form. Printing multiplication table in triangular form is achieved using a loop.

Below is a demonstration of the same −

Input

Suppose our input is −

Input : 7

Output

The desired output would be −

The result is :
1
2 4
3 6 9
4 8 12 16
5 10 15 20 25
6 12 18 24 30 36
7 14 21 28 35 42 49

Algorithm

Step 1 - START
Step 2 - Declare 3 integer values namely my_input, I and j
Step 3 - Read the required values from the user/ define the values
Step 4 – Using two for-loops, iterate from 1 to my_input value and calculate the i*j value.
Step 5- Display the result
Step 6- Stop

Example 1

Here, the input is being entered by the user based on a prompt. You can try this example live in ourcoding ground tool .

import java.util.Scanner;
import java.util.*;
public class MultiplicationTableTrianglePattern {
   public static void main(String args[]){
      int my_input, i, j;
      System.out.println("Required packages have been imported");
      Scanner my_scanner = new Scanner(System.in);
      System.out.println("A reader object has been defined ");
      System.out.println("Enter a number ");
      my_input = my_scanner.nextInt();
      for (i = 1; i <= my_input; i++) {
         for (j = 1; j <= i; j++) {
            System.out.print(i * j + " ");
         }
         System.out.println();
      }
   }
}

Output

Required packages have been imported
A reader object has been defined
Enter a number
7
1
2 4
3 6 9
4 8 12 16
5 10 15 20 25
6 12 18 24 30 36
7 14 21 28 35 42 49

Example 2

Here, the integer has been previously defined, and its value is accessed and displayed on the console.

import java.util.*;
public class MultiplicationTableTrianglePattern {
   public static void main(String args[]){
      int my_input, i, j;
      System.out.println("Required packages have been imported");
      my_input = 7;
      System.out.println("The number is defined as " +my_input );
      for (i = 1; i <= my_input; i++) {
         for (j = 1; j <= i; j++) {
            System.out.print(i * j + " ");
         }
         System.out.println();
      }
   }
}

Output

Required packages have been imported
The number is defined as 7
1
2 4
3 6 9
4 8 12 16
5 10 15 20 25
6 12 18 24 30 36
7 14 21 28 35 42 49