https://h30306.github.io/blog/tags/iterator/Recent content in Iterator onHugo -- gohugo.ioenhwork0511@gmail.com (Wei Yi Chung)hwork0511@gmail.com (Wei Yi Chung)© 2026 Wei Yi ChungSat, 24 Oct 2026 00:00:00 +0000https://h30306.github.io/blog/leetcode/leetcode-173/Sat, 24 Oct 2026 00:00:00 +0000hwork0511@gmail.com (Wei Yi Chung)https://h30306.github.io/blog/leetcode/leetcode-173/LeetCode 173 note: flattening to an array is simple but uses O(n) space; the follow-up keeps the left spine on a stack for amortized O(1) and O(h) spacehttps://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-281/Wed, 29 Apr 2026 00:00:00 +0000hwork0511@gmail.com (Wei Yi Chung)https://h30306.github.io/blog/leetcode/leetcode-281/LeetCode 281 note: a queue of unfinished sources, take one value in turn and put the source back if anything remains; it generalizes to k sources