https://h30306.github.io/blog/tags/lazy-deletion/Recent content in Lazy-Deletion onHugo -- gohugo.ioenhwork0511@gmail.com (Wei Yi Chung)hwork0511@gmail.com (Wei Yi Chung)© 2026 Wei Yi ChungTue, 20 Oct 2026 00:00:00 +0000https://h30306.github.io/blog/algorithm/queue-and-design/Tue, 20 Oct 2026 00:00:00 +0000hwork0511@gmail.com (Wei Yi Chung)https://h30306.github.io/blog/algorithm/queue-and-design/Circular queues, zigzag iterators, FIFO matching with cancellation, and the data structure combinations that design problems keep usinghttps://h30306.github.io/blog/leetcode/leetcode-716/Mon, 14 Sep 2026 00:00:00 +0000hwork0511@gmail.com (Wei Yi Chung)https://h30306.github.io/blog/leetcode/leetcode-716/LeetCode 716 note: store unique ids on both the stack and the heap, record deletions by id, and discard deleted entries lazily; tracking values cannot tell duplicates aparthttps://h30306.github.io/blog/leetcode/leetcode-3885/Sun, 29 Mar 2026 00:00:00 +0000hwork0511@gmail.com (Wei Yi Chung)https://h30306.github.io/blog/leetcode/leetcode-3885/LeetCode 3885 note: a dict of current priorities plus a max-heap with lazy deletion, validated on pophttps://h30306.github.io/blog/leetcode/leetcode-3829/Sun, 01 Feb 2026 00:00:00 +0000hwork0511@gmail.com (Wei Yi Chung)https://h30306.github.io/blog/leetcode/leetcode-3829/LeetCode 3829 note: one queue each for riders and drivers; cancellations only update a set, and canceled riders at the front are dropped before matchinghttps://h30306.github.io/blog/leetcode/leetcode-3815/Sun, 18 Jan 2026 00:00:00 +0000hwork0511@gmail.com (Wei Yi Chung)https://h30306.github.io/blog/leetcode/leetcode-3815/LeetCode 3815 note: one max-heap per item, push a new entry on every bid change, and drop stale entries on queryhttps://h30306.github.io/blog/leetcode/leetcode-3607/Sun, 06 Jul 2025 00:00:00 +0000hwork0511@gmail.com (Wei Yi Chung)https://h30306.github.io/blog/leetcode/leetcode-3607/LeetCode 3607 note: Union-Find groups, one min-heap per group, and lazy deletion for offline stations