【Leetcode】【python】Longest Common Prefix
2017-08-11 05:05
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题目大意
寻找一组字符串的公共起始子串解题思路
将每个字符串和第一个字符串对比，而且从第一个字母开始遍历，一旦出现某个字符串结束了，或者字母不同，则直接输出第一个字符串的前N个字母代码
时间复杂度：O(n*k) k为结果字符串长度空间复杂度：O(1)
class Solution(object): def longestCommonPrefix(self, strs): """ :type strs: List[str] :rtype: str """ if not strs: return "" for i in range(len(strs[0])): for string in strs[1:]: if i >= len(string) or string[i] != strs[0][i]: return strs[0][:i] return strs[0]
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