[Leetcode][python]Longest Common Prefix/最长公共前缀

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:]: # flow, flight
                if i >= len(string) or string[i] != strs[0][i]:
                    return strs[0][:i]
        return strs[0]