❤ Leetcode,python2❤ Write a function to find the longest public prefix in a string array. Returns the empty string “” if no common prefix exists.

class Solution(object): def longestCommonPrefix(self, strs): """ :type strs: List[str] :rtype: str """ rstr = '' if strs == []: return rstr old = strs[0] for i in range(len(old)): For j in range(len(STRS)): try: if old[I] == STRS [j] : pass else: return RSTR except: return rstr else: rstr += old[i] return rstrCopy the code