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LeetCode: 49. 字母异位词分组

1、题目描述

给定一个字符串数组,将字母异位词组合在一起。字母异位词指字母相同,但排列不同的字符串。

示例:

输入: ["eat", "tea", "tan", "ate", "nat", "bat"],
输出:
[
  ["ate","eat","tea"],
  ["nat","tan"],
  ["bat"]
]

说明:

  • 所有输入均为小写字母。
  • 不考虑答案输出的顺序。

2、解题思路

class Solution:
    def groupAnagrams(self, strs):
        """
        :type strs: List[str]
        :rtype: List[List[str]]
        """
        result = {}
        for i in strs:
            if result.get(tuple(sorted(i))) is None:
                result[tuple(sorted(i))] = [i]
            else:
                result[tuple(sorted(i))].append(i)
        return list(result.values())