Posts

All the articles I've posted.

• LeetCode 22 Generate Parentheses

  3 May, 2026

  Solutions for LeetCode 22, medium, tags: string, dynamic programming, backtracking.

• System Design - How Git Internals Work

  2 May, 2026

  How Git works under the hood: the four object types (blob, tree, commit, tag), content-addressable storage, refs and branches, the staging area (index), packfiles and delta compression, and merge strategies — with ASCII diagrams and source code walkthrough from the git/git repository.

• LeetCode 207 Course Schedule

  2 May, 2026

  Solutions for LeetCode 207, medium, tags: depth-first search, breadth-first search, graph, topological sort.

• LeetCode 735 Asteroid Collision

  2 May, 2026

  Solutions for LeetCode 735, medium, tags: array, stack, simulation.

• LeetCode 2257 Count Unguarded Cells in the Grid

  Updated: 1 May, 2026

  Solutions for LeetCode 2257, medium, tags: array, graph, simulation.

• LeetCode 2461 Maximum Sum of Distinct Subarrays With Length K

  Updated: 1 May, 2026

  Solutions for LeetCode 2461, medium, tags: array, sliding window, hash.