题解 | #数字三角形#

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