Left half triangle.java

public class Main
{
	public static void main(String[] args) {
	    int n=5;
	    for(int i=1;i<=n;i++){
	        for(int j=i;j<=n;j++){
	            System.out.print("  ");
	        }
	        for(int j=1;j<=i;j++){
	            System.out.print("* ");
	        }
	        System.out.println();
	    }
	
	}
}

Output:
          * 
        * * 
      * * * 
    * * * * 
  * * * * *