字母异位词分组

class Solution(object):

    def groupAnagrams(self, strs):

        """

        :type strs: List[str]

        :rtype: List[List[str]]

        """

        #思路：处理过程用map进行保存；key和value值分别对应 字母的从小到大排列值 和 strs中的真实值

        map_ = {}
        for i in range(len(strs)):
            tmp = ‘‘.join(sorted(strs[i]))
            if tmp in map_:
                map_[tmp].append(strs[i])
            else:
                map_[tmp] = [strs[i]]
        return [v for v in map_.values()]