Method getNode

CPP/Tries/implementTrie.cpp:18–27

class Trie {
    Node* root;
    Node* getNode(string &s){
        Node* curr = root;
        for(auto &ch:s){
            if(curr -> child[ch - 97] == NULL)
                return NULL;
            curr = curr -> child[ch - 97];
        }
        
        return curr;
    }
public:
    Trie() {
        root = new Node('\0');