Word Search II
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What is Word Search II?
Given a board of characters and a list of words, return all words that exist in the board. You build a trie from the word list and do DFS from each cell, pruning paths that do not match any trie prefix. This problem is the hardest trie problem in this stage and teaches you how a trie dramatically reduces the search space compared to checking each word separately.
Free resources to learn Word Search II
More in stage 13: Tries
Word Search II: common questions
Can I learn Word Search II in Hindi?
This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain Word Search II in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.
Is this Word Search II tutorial for beginners?
It is lesson 78 of 137 in the free LeetCode roadmap, in stage 13, Tries. If you are new to LeetCode, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.