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Grokking the Coding Interview Patterns in C++

Check If a Word is a Prefix of Any Word in a Sentence

Explore how to check if a given word is a prefix of any word in a sentence using Trie data structures. Understand the problem constraints, implement the solution, and learn how to identify prefix matches with 1-based indexing in sentences.

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Statement

You are given a sentence containing words separated by single spaces and a searchWord. Your task is to determine whether searchWord is a prefix of any word in the sentence.

Return the 1-based index of the first word in which searchWord appears as a prefix.

  • If searchWord is a prefix of multiple words, return the index of the earliest such word.

  • If no word starts with searchWord, return −1-1 ...