题解 | #蛇形矩阵#

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 scanner = new Scanner(System.in);
        int n = scanner.nextInt();

        int start = 1;
        for (int i = 0; i < n; i++) {
            start += i;
            int temp = start;
            for (int j = 0; j < (n - i); j++) {
                System.out.print(temp + " ");
                temp = temp + 2 + j + i;
            }
            System.out.println();
        }
    }
}