题解 | #蛇形矩阵#
蛇形矩阵
http://www.nowcoder.com/practice/649b210ef44446e3b1cd1be6fa4cab5e
通过计算坐标，按题目的蛇形要求向二维数组中添加元素，最后输出二维数组。
n = int(input())
x, y = 0, 0
out = 0
result = [[0] * n for _ in range(n)]
while True:
out += 1
result[x][y] = out
# 坐标向右上方移动
if x - 1 in range(0, n) and y + 1 in range(0, n):
x -= 1
y += 1
else:
x, y = y, x # 取对称位置
if x + 1 in range(0, n):
x += 1
y = 0
else:
break
for i in range(n):
for j in range(0, n - i):
print(result[i][j], end=(' '))
print()