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Solution: Index Pairs of a String

Explore how to implement a Trie to identify all index pairs where substrings of a text match words from a list. Understand the process of building and traversing the Trie to efficiently solve substring matching problems, improving your ability to handle string data structures in coding interviews.

Statement

Given a string text and an array of strings words, return a list of all index pairs [i, j] such that the substring text[i...j] is present in words.

Return the pairs [i, j] in sorted order, first by the value of i, and if two pairs have the same i, by the value of j.

Constraints:

  • 11 \leq text.length 100\leq 100

  • 11 \leq words.length 20\leq 20 ...