Solution: Word Search II
Understand how to efficiently find multiple words in a 2D grid using a trie data structure to reduce search space and backtracking with depth-first search to explore letter paths. This lesson teaches you to build a trie from the word list, apply recursive DFS for exploration, and analyze time and space complexity of the approach.
We'll cover the following...
We'll cover the following...
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