Python：每日一题 214

Mrboomboom

1. def test214(str1, n):
   
2.     m = [[''] * n for i in range(n)]
   
3.     index, turnindex = 0, 0
   
4.     turn = [[0, 1], [1, 0], [0, -1], [-1, 0]]
   
5.     now = [0, 0]
   
6.     for j in range(n * n):
   
7.         m[now[0]][now[1]] = str1[index]
   
8.         left = [now[i] + turn[turnindex][i] for i in range(2)]
   
9.         if left[0] == n or left[1] == n or m[left[0]][left[1]] != '':
   
10.             turnindex = (turnindex + 1) % 4
    
11.             left = [now[i] + turn[turnindex][i] for i in range(2)]
    
12.         now = left
    
13.         index = 0 if index == len(str1) - 1 else index + 1
    
14.     for ii in m:
    
15.         print(ii)

复制代码