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LeetCode-49 Group Anagrams : 언어유희 ex) cat -> act cat note : hint: collections.defaultdict(list)class Solution: def groupAnagrams(self, strs: List[str]) -> List[List[str]]: anagrams = defaultdict(list) for word in strs: anagrams[''.join(sorted(word))].append(word) return list(anagrams.values()) Result : 98ms Memory: 17.2mbdefault_factory: index[x] 에서 x를 찾을 수 없을 때 ValueError때 발생한다. 모든 구현이 ..