Solution: Index Pairs of a String
Explore how to implement a trie to efficiently find and return all pairs of start and end indices of substrings in a text that match words from a given list. You'll understand how to build and traverse a trie for substring matching while considering time and space complexity.
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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:
text.lengthwords.length...