Notes on algorithms, interview preparation, system design and AI-assisted coding.https://www.sahayapoorva.net/https://www.sahayapoorva.net/blog/monotonic-stack/https://www.sahayapoorva.net/blog/monotonic-stack/How a monotonic stack finds the next greater or smaller element in one O(n) pass, with three worked LeetCode examples.Sat, 24 Oct 2026 00:00:00 GMT