422 Valid Word Square
422. Valid Word Square
题目： https://leetcode.com/problems/valid-word-square/
难度 : Easy
思路：
就是对比一个矩阵内 xy == yx?
try /except 真是好用
AC代码
class Solution(object):
def validWordSquare(self, words):
"""
:type words: List[str]
:rtype: bool
"""
n = len(words)
for i in xrange(n):
m = len(words[i])
for j in xrange(m):
try:
if words[i][j] != words[j][i]:
return False
except:
return False
return True
