Introduction

In this article, we will explore Java Program to Print Left Triangle Star Pattern. The program in this article prints out the left triangular star pattern as follows:

Example:
Input : n = 5
Output:

           * 
         * * 
       * * * 
     * * * * 
   * * * * *

Here the input n to the program from the user or otherwise determines the number of rows of the pattern that will be printed out.

Sample Coe for Left Triangle Star Pattern

import java.io.*;
//Java code to demonstrate right star triangle
public class Demo
{
//Function to demonstrate printing pattern
public static void starLeft (int n)
{
int a, b;
//outer loop to handle the number of rows
//k in this case
for (a = 0; a < n; a++)
{
//inner loop to handle number of columns
//values changing according to outer loop
for (b = 2 * (n - a); b > = 0; b --)
{
//printing stars
System.out.print (“ ”);
}
//nested third loop
for (b = 0; b < = a; b ++)
{
//Printing stars
System.out.println (“ * “);
}
//end line
System.out.println ();
}
}
//Driver Function
public static void main (String args [])
{
int k = 5;
starLeft (k);
}
}

OUTPUT

           * 
         * * 
       * * * 
     * * * * 
   * * * * *