pascal's triangle java 2d array
import java.util.Scanner; class Pascal_Triangle {//opening of class public static void main(String args[]) {//opening of main Scanner sc=new Scanner(System.in); int n,i,j,a[][]; //taking user's input. System.out.println("HOW MANY STEPS?"); n=sc.nextInt(); a=new int[n][n]; //filling the 2D matrix. for(i=0;i<n;i++){ for(j=0;j<=i;j++) if(j==0 || j==i) a[i][j]=1; else a[i][j]=a[i-1][j-1]+a[i-1][j]; } //displaying the Pascal's Triangle as the output. System.out.println("\nOUTPUT:\n"); for(i=0;i<n;i++) { for(j=0;j<=i;j++) System.out.print(a[i][j]+"\t"); System.out.println(); } }//clossing of main }//closing of class
