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NeetCode 150 / 2-D Dynamic Programming
14.02 · Problem

Longest Common Subsequence

Medium Two-string DP table 1 video LC 1143 Pro

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Return the length of the longest common subsequence of two strings: the longest sequence of characters appearing in both, in the same order but not necessarily contiguous.

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Item 112 of 150 · updated 2026-10-12