feat: [Week 05-2] solve group-anagrams

Author: Chaedie

group-anagrams/Chaedie.py

@@ -0,0 +1,22 @@
+"""
+Solution: 
+    1) hash map 에 sorted_word를 키로, 해당 sorted_word 에 해당하는 요소들을 밸류로 넣습니다.
+Time: O(n^2 logn)= O(n) * O(nlogn)
+Space: O(n)
+"""
+
+
+class Solution:
+    def groupAnagrams(self, strs: List[str]) -> List[List[str]]:
+        anagram_words = defaultdict(list)
+        # dict = {sorted_word: [word, word]}
+
+        for i in range(len(strs)):
+            word = strs[i]
+            sorted_word = "".join(sorted(word))
+            anagram_words[sorted_word].append(word)
+
+        result = []
+        for arr in anagram_words.values():
+            result.append(arr)
+        return result