In this form, a table is displayed row and column-wise, in such a way such that in every row, only the entries up to the same column number filled.
Example:
Input : rows = 6
Output:
1
2 4
3 6 9
4 8 12 16
5 10 15 20 25
6 12 18 24 30 36
Approach: The idea is to use nested loops. First, display the column numbers. Then, use a nested loop to fill out the entries of the row.
- In function main(), firstly the number of lines n is entered.
- The loop for(i=0; i<rows; i++) is used to print the column number lines.
- The loop for(i=0; i<rows; i++), is used to print the n rows entries. 4. The nested loop for(j = 0; j<=i; j++), is used to print the current entry.
Below is the implementation of the above approach.
Java
// Java Program to Print the Multiplication// Table in Triangular Formimport java.util.*;public class MultiplicationTableTrianglePattern { // Function to print tables in triangular form public static void main(String args[]) { int rows, i, j; Scanner in = new Scanner(System.in); rows = 6; // Loop to print multiplication // table in triangular form for (i = 1; i <= rows; i++) { for (j = 1; j <= i; j++) { System.out.print(i * j + " "); } System.out.println(); } }} |
Output
1 2 4 3 6 9 4 8 12 16 5 10 15 20 25 6 12 18 24 30 36
Time Complexity: O(n2), where n is a number of rows.
Auxiliary Space: O(1) since using only constant variables
