ZZULIOJ 1130: 杨辉三角，Java

1130: 杨辉三角

import java.util.Scanner;
public class Main {
    static Scanner cin = new Scanner(System.in);static int [][]a=new int[31][31];public static void main(String[] args) {
    a[1][1]=1;int n=cin.nextInt();for(int i=2;i<=n;i++)for(int j=1;j<=i;j++)a[i][j]=a[i-1][j-1]+a[i-1][j];for(int i=1;i<=n;i++){
    for(int j=1;j<=i;j++)System.out.print(a[i][j]+" ");System.out.println();}}
}