[LeetCode] 49. Group Anagrams

📝문제 풀이

1. collections.defaultdict()를 활용하여 빈 딕셔너리 생성 후 append로 원소 추가

 

class Solution(object):
    def groupAnagrams(self, strs):
        anagrams = collections.defaultdict(list)
        for word in strs:
            sorted_word = ''.join(sorted(word)) 
            anagrams[sorted_word].append(word)
        return list(anagrams.values())