midTrie
Trie for counting word frequencies
Updated Apr 28, 2026
Short answer
Store an integer counter in the terminal node instead of just a boolean flag.
Deep explanation
Mid-level analysis of Trie for counting word frequencies. Focuses on algorithmic variations and efficiency trade-offs in real applications.
Real-world example
Search engine search bars.
Common mistakes
- Searching for a prefix and returning the entire Trie instead of just child words.
Follow-up questions
- How to limit autocomplete results?