Pascal Triangle in Java

1public class Main {
2    private static int nCr(int n, int r) {
3        int res = 1;
4        for (int i = 0; i < r; i++) {
5            res = res * (n - i) / (i + 1);
6        }
7        return res;
8    }
9
10    public static void main(String[] args) {
11        int rows = 5;
12        for (int i = 0; i < rows; i++) {
13            for (int j = 0; j <= i; j++) {
14                System.out.print(nCr(i, j) + " ");
15            }
16            System.out.println();
17        }
18    }
19}