Regular Expression Matching
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What is Regular Expression Matching?
Given a string and a pattern with dot and star wildcards, determine if the pattern matches the entire string. A 2D DP table tracks whether each prefix of the string matches each prefix of the pattern, with special handling for the star operator. This is one of the hardest 2D DP problems and teaches you to handle optional repetition in DP, where a character can appear zero or more times.
Free resources to learn Regular Expression Matching
More in stage 17: D Dynamic Programming
Regular Expression Matching: common questions
Can I learn Regular Expression Matching 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 Regular Expression Matching 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 Regular Expression Matching tutorial for beginners?
It is lesson 108 of 137 in the free LeetCode roadmap, in stage 17, D Dynamic Programming. 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.