Challenge 1: Total Number of Words in a Trie
For your first challenge regarding tries, you'll be writing a very commonly used function, which gives you the trie word count.
We'll cover the following
Problem statement
Implement the totalWords() function, which will find the total number of words in a trie.
Input
This is the root node of a trie.
Output
It returns the total number of words in a trie.
Sample input
keys = {"the", "a", "there", "answer", "any",
"by", "bye", "their","abc"}
Sample output
9
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