Posts

All the articles I've posted.

• LeetCode 234 Palindrome Linked List

  12 Sep, 2026

  Solutions for LeetCode 234, easy, tags: linked list, two pointers, stack, recursion.

• System Design - How Time-Series Compression Works

  11 Sep, 2026

  How time-series databases compress timestamps and floating-point values: delta-of-delta encoding, XOR-based float compression, the Facebook Gorilla paper, and a source code walkthrough of Prometheus TSDB's chunk encoding.

• LeetCode 96 Unique Binary Search Trees

  11 Sep, 2026

  Solutions for LeetCode 96, medium, tags: math, dynamic programming, tree, binary search tree.

• AI/ML - How Neural Network Backpropagation Works

  10 Sep, 2026

  How backpropagation trains neural networks: the chain rule on computational graphs, forward pass, backward pass, gradient flow, vanishing gradients, and a source code walkthrough of PyTorch's autograd engine.

• LeetCode 1679 Max Number of K-Sum Pairs

  10 Sep, 2026

  Solutions for LeetCode 1679, medium, tags: array, hash table, two pointers, sorting.

• LeetCode 802 Find Eventual Safe States

  10 Sep, 2026

  Solutions for LeetCode 802, medium, tags: depth-first search, breadth-first search, graph, topological sort.