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Grokking the Coding Interview Patterns in Python

Solution: Longest Common Suffix Queries

Explore how to implement a reversed trie to solve longest common suffix queries. Learn to build the trie from wordsContainer by inserting words backwards, store the best candidate at each node, and efficiently query it for wordsQuery. Understand the complexity analysis of this approach for optimized suffix matching.

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Statement

You are given two arrays of strings, wordsContainer and wordsQuery.

For each string wordsQuery[i], find the string in wordsContainer that shares the longest common suffix with it.

  • If multiple strings in wordsContainer share the same longest suffix, choose the one with the smallest length.

  • If two or more such strings have the same smallest length, choose the string that appears earliest in wordsContainer.

Return an array of integers ans, where ans[i] is the index of the chosen string in wordsContainer for the query wordsQuery[i].

Constraints:

  • 1≤1 \leq wordsContainer.length, wordsQuery.length ...