Engineering & Guides

Coding Patterns

4 articles on coding patterns.

Sliding window algorithm visualization showing a glowing blue window frame moving across colorful data blocks

The Sliding Window Algorithm: The Pattern That Turns O(n²) into O(n) Overnight

I avoided the sliding window pattern for months, writing nested loops that timed out on every large test case. Here's the decision framework that finally made it click, with code templates and five practice problems in order.

12 min read May 21, 2026Read

Abstract illustration of a 3D grid being compressed into fewer rows, representing dynamic programming space optimization

Coding Patterns

Advanced Dynamic Programming: Multi-Dimensional States and Space Optimization

Learn how to solve multi-dimensional dynamic programming problems and optimize space from O(m*n) to O(n). Covers edit distance, knapsack, boolean states, and common mistakes with practical Python examples.

12 min read May 19, 2026Read

Dynamic programming template solving climbing stairs, coin change, and longest increasing subsequence problems

Coding Patterns

I Solved 3 DP Problems With the Exact Same Template. Here It Is.

Every dynamic programming problem follows the same 4 steps: define the state, find the recurrence, set the base case, determine the answer. I prove it with three LeetCode classics.

10 min read May 18, 2026Read

Dynamic Programming State and Transition Framework - Abstract visualization of connected nodes forming a DP table

Coding Patterns

Dynamic Programming: State + Transition, Not Memorization

Stop memorizing DP solutions. Learn the two-step framework (state + transition) that makes any dynamic programming problem approachable, with a full Coin Change walkthrough.

8 min read May 17, 2026Read

That's everything in Coding Patterns for now.