题解 | #数字三角形#

import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
      Scanner sc = new Scanner(System.in);
        while(sc.hasNextInt()){
            int n = sc.nextInt();
            for (int i = 1;i<=n;i++){
                for (int j = 1;j<=i;j++){
                    System.out.printf(j+" ");
                }
                System.out.println();
            }
        }
    }
}