1.pascal triangle

import java.util.*;
import java.lang.*;
class pascal
{
    public static void main(String args[])
    {
        int i,j,k,n;
        Scanner t = new Scanner(System.in);
        System.out.println("n = ?");
        n = t.nextInt();
        System.out.println("PASCAL TRIANGLE FOR "+n+" no. of lines is below ");
            for(i=0;i<n;i++)
            {
                for(j=n-i;j>0;j--)
                {
                    System.out.print(" ");
                }
                for(k=0;k<=i;k++)
                {
                    int z = comb(i,k);
                    System.out.print(z+"  ");
                }
                System.out.println("");
            }


    }

    static int fact(int x)
    {
        if(x==0)

            return 1;
        else return x*fact(x-1);
    }
    static int comb(int x,int y)
    {
        int z;
        z = fact(x)/(fact(x-y)*fact(y));
        return z;
    }

}