Solution: Word Search II
Explore how to solve the Word Search II problem by combining trie data structure and backtracking. Understand how building a trie from given words helps prune search paths in the grid, enabling efficient depth-first search and reducing time complexity. This lesson equips you to handle multiple word searches while managing space and time trade-offs effectively.
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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:
- rows, columns