Posts

All the articles I've posted.

• LeetCode 1574 Shortest Subarray to be Removed to Make Array Sorted

  Updated: 1 May, 2026

  Solutions for LeetCode 1574, medium, tags: array, binary-search, two-pointers.

• LeetCode 1652 Defuse the Bomb

  Updated: 1 May, 2026

  Solutions for LeetCode 1652, easy, tags: array, sliding window.

• System Design - How Linux epoll Works

  1 May, 2026

  How Linux epoll works: the evolution from select/poll, epoll's internal architecture with red-black trees and ready lists, level-triggered vs edge-triggered modes, and a source code walkthrough from the Linux kernel.

• LeetCode 322 Coin Change

  1 May, 2026

  Solutions for LeetCode 322, medium, tags: array, dynamic programming, breadth-first search.

• LeetCode 895 Maximum Frequency Stack

  1 May, 2026

  Solutions for LeetCode 895, hard, tags: hash table, stack, design, ordered set.

• LeetCode 2064 Minimized Maximum of Products Distributed to Any Store

  Updated: 1 May, 2026

  Solutions for LeetCode 2064, medium, tags: array, binary search, heap.