pythonSnippets/Trie2.py at main · dangerousLefty/pythonSnippets · GitHub

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class TrieNode:

    def __init__(self):
        self.children = {}
        self.endOfWord = False


class Trie:

    def __init__(self):
        self.root = TrieNode()

    def insert(self, word: str) -> None:
        cur = self.root

        for c in word:
            if c not in cur.children:
                cur.children[c] = TrieNode()
            cur = cur.children[c]

        cur.endOfWord = True


    def search(self, word: str) -> bool:
        cur = self.root

        for c in word:
            if c in cur.children:
                cur = cur.children[c]
            else:
                return False

        if cur.endOfWord == True:
            return True

        else:
            return False

    def startsWith(self, prefix: str) -> bool:
        cur = self.root

        for c in prefix:
            if c in cur.children:
                cur = cur.children[c]
            else:
                return False

        return True

obj = Trie()
obj.insert("ape")
obj.search("ape")
obj.startsWith("ap")