Posts

All the articles I've posted.

• LeetCode 253 Meeting Rooms II

  20 Aug, 2026

  Solutions for LeetCode 253, medium, tags: array, sorting, heap, sweep line.

• LeetCode 846 Hand of Straights

  20 Aug, 2026

  Solutions for LeetCode 846, medium, tags: array, hash table, greedy, sorting.

• LeetCode 2 Add Two Numbers

  19 Aug, 2026

  Solutions for LeetCode 2, medium, tags: linked list, math, recursion.

• LeetCode 45 Jump Game II

  19 Aug, 2026

  Solutions for LeetCode 45, medium, tags: array, dynamic programming, greedy.

• System Design - How Linux cgroups Work

  19 Aug, 2026

  How Linux control groups (cgroups) work: resource isolation and limiting for processes, the filesystem interface, v1 vs v2 architecture, memory/cpu/io/pids controllers, kernel internals, OOM killer integration, and how Docker and Kubernetes use cgroups to build containers.

• LeetCode 169 Majority Element

  17 Aug, 2026

  Solutions for LeetCode 169, easy, tags: array, hash table, divide and conquer, sorting, counting.