class Trie: def __init__(self): self.l = [] def insert(self, word: str) -> None: self.l.append(word) def search(self, word: str) -> bool: for s in self.l: if s == word: return True return False def startsWith(self, prefix: str) -> bool: for s in self.l: if s.startswith(prefix): return True return False # Your Trie object will be instantiated and called as such: # obj = Trie() # obj.insert(word) # param_2 = obj.search(word) # param_3 = obj.startsWith(prefix)