mediumBlind 75
Longest Common Subsequence
Find length of longest common subsequence Example: "abcde", "ace" => 3
Longest Common Subsequence is about turning repeated work into a reusable state instead of re-solving subproblems. Interviewers love it because it reveals your state-and-transition thinking and your edge-case discipline. Once you define the right state, the transitions usually write themselves.
StringDynamic Programming
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1Longest Common Subsequencemedium
Based onLeetCode