juniorTrie
Explain the root of a Trie.
Updated Apr 28, 2026
Short answer
The root is an empty node that represents the null prefix and serves as the starting point for all operations.
Deep explanation
Detailed theoretical explanation of Explain the root of a Trie.. A Trie (retrieval tree) stores keys in a path from root to leaf. It is highly efficient for prefix-based queries.
Real-world example
Dictionary apps or spell checkers.
Common mistakes
- Forgetting to mark the 'isEndOfWord' flag, resulting in failed searches for complete words.
Follow-up questions
- Can a Trie store integers?