Great job on making it this far in the lesson on Tries! This is a very powerful data structure with many applications in software engineering, computer science, and coding interviews!

Let’s summarize everything we went over:

• A trie is a data structure that efficiently stores strings based on their prefix.
• A trie is a tree-like data structure in which each node represents a character.
• Each node’s child contains other nodes that represent subsequent characters in a string.
• The Trie data structure we created supported the following functions:
  • Adding a word
  • Searching for a word
  • Counting a prefix
• Each of these functions traverses the trie starting from the root and goes through the nodes corresponding to the characters in a string (prefix or word).
• Relevant data is stored in the trie’s nodes.
• A trie can be used as the base data structure for a spell checker.

Good work!