Posts

All the articles I've posted.

• LeetCode 230 Kth Smallest Element in a BST

  18 Apr, 2026

  Solutions for LeetCode 230, medium, tags: tree, depth-first search, binary search tree, binary tree.

• LeetCode 347 Top K Frequent Elements

  18 Apr, 2026

  Solutions for LeetCode 347, medium, tags: array, hash table, divide and conquer, sorting, heap, bucket sort, counting, quickselect.

• System Design - How the TLS Handshake Works

  17 Apr, 2026

  How TLS (Transport Layer Security) works: the handshake protocol, certificate verification, key exchange with Diffie-Hellman, symmetric encryption, TLS 1.2 vs 1.3, and a source code walkthrough from Go's crypto/tls package.

• System Design - How Apache Kafka Works

  16 Apr, 2026

  How Apache Kafka works internally: the distributed commit log, partitions, replication with ISR, producer batching, consumer groups, zero-copy transfer, and source code walkthrough from the apache/kafka repository.

• LeetCode 49 Group Anagrams

  16 Apr, 2026

  Solutions for LeetCode 49, medium, tags: array, hash table, string, sorting.

• LeetCode 155 Min Stack

  16 Apr, 2026

  Solutions for LeetCode 155, medium, tags: stack, design.