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 in = new Scanner(System.in);
        // 注意 hasNext 和 hasNextLine 的区别
        while (in.hasNextInt()) { // 注意 while 处理多个 case
            int size = in.nextInt();
            int[][] jz = new int [size][size];
            int row = 0;
            int col = 0;
            int count = 0;


            for (int curLever = 0; curLever < size; curLever++) {
                for (int i = 0; i < curLever + 1; i++) {
                    count++;
                    jz[row][col] = count;
                    if (i == curLever) {
                        row = curLever + 1;
                        col = 0;
                    } else {
                        col++;
                        row--;
                    }
                }

            }
            for (int i = 0; i < size ; i++) {
                for (int k = 0; k < size ; k++) {
                    if (jz[i][k] != 0) {
                        System.out.print(jz[i][k] + " ");
                    }

                }
                System.out.print("\n");
            }
        }






    }
}