题解 | #蛇形矩阵#

import sys

n = int(input())
arr = []

for i in range(1, n + 1):
    arr.append([0] * i)
arr = arr[::-1]
for i in range(n):
    for j in range(n - i):
        if j == 0:
            if i == 0:
                arr[i][j] = 1
            else:
                arr[i][j] = arr[i - 1][j] + i
        else:
            arr[i][j] = arr[i][j - 1] + j + 1 + i 
for i in arr:
    for j in i:
        print(j, end=' ')
    print()

参考大佬的代码，，，