// Returns if there is any word in the trie
// that starts with the given prefix.
bool startsWith(string prefix) {
int len = prefix.length();
if (len < 1)return false;
TrieNode* ref = root;
for (int i = 0; i < len; i++) {
if (!ref || !ref->getDataPtr(prefix[i]))
return false;
ref = ref->getDataPtr(prefix[i]);
}
return true;
}
// Returns if the word is in the trie.
bool search(string word) {
//if (!word) return false;
int len = word.length();
if (len < 1) return false;
TrieNode* ref = root;
for (int i = 0; i < len; i++) {
if (!ref||!ref->getDataPtr(word[i]))
return false;
ref = ref->getDataPtr(word[i]);
}
return ref->isWord();
}