Triangle.java

import java.util.Scanner;

public class PascalTriangle
{
	public static void main(String a[]) throws Exception
	{
	   int num=0;
           Scanner scan=new Scanner(System.in);
             
           System.out.println("Enter number of rows for pascal triangle:");
           num=scan.nextInt();
           System.out.print("Pascal Triangle of "+num+" is:\n");
 
          //Write your logic here  

           int[][] container = new int[num][num];
          for(int i=0; i<num; i++){
              container[i][0] = 1;
              
              System.out.print(new String(new char[((num-1)-i)]).replace("\00","_"));
              
              System.out.print("1_");
             for(int y=1; y < i; y++){
                int aaa = (container[i-1][y-1] + container[i-1][y]);
                container[i][y]=aaa;
                System.out.print(aaa+"_");
             }
              container[i][i] = 1;
              System.out.println(i>0?"1_":"");   
          }
          //end 
           
        }

        	
}