LeetCode_Group Anagrams

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Group Anagrams

Given an array of strings, group anagrams together.
(将使用相同字符构成的不同排列的单词合并)

Note:

  1. All inputs will be in lowercase.
  2. The order of your output does not matter.

Example:



1. 哈希表 / Dict

遍历数组中的每一个单词，将每个单词根据所组成的字符排序从而得到哈希表的key。具体实现过程如下：

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class Solution:
    def groupAnagrams(self, strs):
        """
        :type strs: List[str]
        :rtype: List[List[str]]
        """
        
        word_map = {}
        for word in strs:
            items = list(word)
            items.sort()
            items = ''.join(items)
            if items not in word_map:
                word_map[items] = [word]
            else:
                word_map[items].append(word)

        result = []
        for key in word_map:
            result.append(word_map[key])

        return result