Longest Increasing Subsequence
Last updated
What is Longest Increasing Subsequence?
Given an array, find the length of the longest strictly increasing subsequence. For each element, you check all previous elements that are smaller and extend the best subsequence ending there. This problem teaches you patience sorting and the classic O(n²) DP formulation, with an O(n log n) binary search optimization as a natural follow-up.
Free resources to learn Longest Increasing Subsequence
More in stage 16: D Dynamic Programming
Longest Increasing Subsequence: common questions
Can I learn Longest Increasing Subsequence 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 Longest Increasing Subsequence 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 Longest Increasing Subsequence tutorial for beginners?
It is lesson 100 of 137 in the free LeetCode roadmap, in stage 16, 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.