feat: week 6 문제풀이 (257)

Author: jinah92

design-add-and-search-words-data-structure/jinah92.py

@@ -0,0 +1,23 @@
+# 공간복잡도 O(n): dictionary 멤버로 set을 사용
+# 시간복잡도 O(n*p): 삽입연산은 O(1)을 사용
+import re
+
+class WordDictionary:
+
+    def __init__(self):
+        self.dictionary = set()
+
+    def addWord(self, word: str) -> None:
+        self.dictionary.add(word)
+
+    def search(self, word: str) -> bool:
+        if '.' in word:
+            pattern = re.compile(word)
+            # O(n) times
+            for item in self.dictionary:
+                # O(p) times : 패턴의 길이(p)
+                if pattern.fullmatch(item):
+                    return True
+            return False
+        else:
+            return word in self.dictionary