leetcode14
2016-06-03 18:12
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14、Longest Common Prefix
Write a function to find the longest common prefix string amongst an array of strings.
这个之前题目理解错了 题目是要找字符串数组中前缀相同字母的最大个数,想了好久也没搞对 最后还是看了Discuss,巧妙的利用了reduce函数,将所有的字符串一个一个进行比较,然后拔把结果与下一个字符串进行比较,只要有不相同的就break 每一次比较i都重新赋值0。
Write a function to find the longest common prefix string amongst an array of strings.
class Solution(object): def longestCommonPrefix(self, strs): """ :type strs: List[str] :rtype: str """ def commonPre(s1,s2): i=0 for a,b in zip(s1,s2): if a!=b: break else: i+=1 return s1[:i] return '' if len(strs)==0 else reduce(commonPre,strs)
这个之前题目理解错了 题目是要找字符串数组中前缀相同字母的最大个数,想了好久也没搞对 最后还是看了Discuss,巧妙的利用了reduce函数,将所有的字符串一个一个进行比较,然后拔把结果与下一个字符串进行比较,只要有不相同的就break 每一次比较i都重新赋值0。
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