https://leetcode-cn.com/problems/longest-common-prefix/submissions/
最笨的遍历方法
class Solution:
def longestCommonPrefix(self, strs: List[str]) -> str:
if len(strs) == 0:
return ''
#以第一个单词作为比较对象
for l in range(1,len(strs[0])+1)[::-1]:
flag = True
#遍历其余所有单词
for word in strs[1:]:
if word[:l] != strs[0][:l]:
flag = False
if flag:
return strs[0][:l]
return ''