题解 | #数字三角形#

import java.util.Scanner;
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.print(j + " ");
                }
                System.out.println();
            }
        }
    }
}