Posts

All the articles I've posted.

• LeetCode 2300 Successful Pairs of Spells and Potions

  14 Aug, 2026

  Solutions for LeetCode 2300, medium, tags: array, binary search, sorting.

• LeetCode 456 132 Pattern

  14 Aug, 2026

  Solutions for LeetCode 456, medium, tags: array, stack, monotonic stack.

• System Design - How RocksDB Compaction Works

  14 Aug, 2026

  How RocksDB compaction works under the hood: leveled compaction scheduling, file picking, merge-sort mechanics, write amplification tradeoffs, and a source code walkthrough from the facebook/rocksdb repository.

• System Design - How Search Engines Work (Inverted Indexes and Ranking)

  13 Aug, 2026

  How search engines work: inverted indexes, TF-IDF/BM25 scoring, query processing with skip pointers, distributed scatter-gather, and how Lucene organizes segments for near-real-time search.

• LeetCode 986 Interval List Intersections

  13 Aug, 2026

  Solutions for LeetCode 986, medium, tags: array, two pointers.

• LeetCode 227 Basic Calculator II

  13 Aug, 2026

  Solutions for LeetCode 227, medium, tags: math, string, stack.