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Grokking the Coding Interview Patterns in Go

Solution: Word Search II

Explore how to solve Word Search II problems by combining trie data structures with backtracking. Understand how tries help efficiently match prefixes and reduce search complexity. Practice implementing a recursive depth-first search to find all valid words from a list within a 2D grid, improving your problem-solving skills for coding interviews.

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Statement

You are given a list of strings that you need to find in a 2D grid of letters such that the string can be constructed from letters in sequentially adjacent cells. The cells are considered sequentially adjacent when they are neighbors to each other either horizontally or vertically. The solution should return a list containing the strings from the input list that were found in the grid.

Constraints:

  • 1≤1 \leq rows, columns ≤12\leq 12
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