Question 1

How do you implement a Trie node?

Accepted Answer

A Trie node is typically implemented with an array or hash map to store pointers to its children (one for each character in the alphabet) and a boolean flag to mark the end of a word. For example, a TrieNode class could have 'children' and 'isEndOfWord' properties.

Question 2

What are the time complexities of insertion and search operations in a Trie?

Accepted Answer

The time complexity for both insertion and search operations in a Trie is O(L), where L is the length of the word. This is because for each character in the word, we traverse one level down the Trie.

Trie Implementation Interview Questions

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