LeetCode-python 49.字母异位词分组

题目链接
难度：中等       类型： 字符串

---

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"]
]

解题思路

---

对每个字符串排序，排完序相等的属于同一组。用字典会快一点

代码实现

class Solution(object):
    def groupAnagrams(self, strs):
        """
        :type strs: List[str]
        :rtype: List[List[str]]
        """
        d = {}
        for s in strs:
            key = tuple(sorted(s))
            d[key] = d.get(key, []) + [s]
        return d.values()

本文链接：https://www.jianshu.com/p/bbd7714da71a