Master software development through structured content organized by difficulty levels. From beginner basics to advanced internals.
Level 1
Learn how two pointers technique works through an engaging treasure hunt analogy. Discover why tracking two positions simultaneously is often more efficient than one.
Author
Mr. Oz
Duration
5 mins
Level 2
Implementation details, opposite vs same direction pointers, common patterns, and code examples.
Author
Mr. Oz
Duration
8 mins
Level 3
Advanced optimization, cache considerations, and when to use two pointers vs. alternatives.
Author
Mr. Oz
Duration
12 mins
Level 1
Learn how stacks work through a delicious pancake stack analogy. Discover why the last one in is the first one out.
Author
Mr. Oz
Duration
5 mins
Level 2
Implementation details, array vs linked list stacks, and common operations.
Author
Mr. Oz
Duration
8 mins
Level 3
Memory layout, call stacks, recursion, and performance considerations.
Author
Mr. Oz
Duration
12 mins
Level 1
Learn how tree traversals work through an engaging library exploration analogy. Discover why the order you visit nodes matters.
Author
Mr. Oz
Duration
5 mins
Level 2
Recursive vs iterative approaches, stack-based implementations, and production-ready code.
Author
Mr. Oz
Duration
8 mins
Level 3
Memory layout, CPU cache performance, recursion stack overhead, and advanced optimization techniques.
Author
Mr. Oz
Duration
12 mins
Level 1
Discover how merge algorithms work through an engaging card game analogy. Learn why combining sorted data is different from combining unsorted data.
Author
Mr. Oz
Duration
5 mins
Level 2
Technical implementation, dummy node pattern, and common pitfalls to avoid when working with merge algorithms.
Author
Mr. Oz
Duration
8 mins
Level 3
Memory layout, CPU cache performance, SIMD optimizations, and real-world performance benchmarks.
Author
Mr. Oz
Duration
12 mins
Level 1
Discover how sliding window technique works through an engaging train window analogy. Learn why two pointers are better than one for many problems.
Author
Mr. Oz
Duration
5 mins
Level 2
Two pointer techniques, fixed vs variable-size windows, and production-ready patterns for common problems.
Author
Mr. Oz
Duration
8 mins
Level 3
Memory layout, CPU cache performance, and advanced optimization. When to use sliding window vs. other approaches.
Author
Mr. Oz
Duration
12 mins
Level 1
Discover how hash tables work through an engaging library catalog analogy. Learn why instant lookups make them one of computer science's most powerful tools.
Author
Mr. Oz
Duration
5 mins
Level 2
Hash functions, collision resolution strategies, and common operations for production-ready hash tables.
Author
Mr. Oz
Duration
8 mins
Level 3
Memory layout, CPU cache performance, and advanced optimization. When to choose hash tables over arrays or trees.
Author
Mr. Oz
Duration
12 mins
Level 2
Pointer manipulation, traversal algorithms, insertion and deletion operations for production-ready code.
Author
Mr. Oz
Duration
8 mins
Level 3
Memory layout, CPU cache performance, and low-level optimization. When to choose linked lists over arrays.
Author
Mr. Oz
Duration
12 mins
Browse categories and find the topic you want to learn. Each topic is covered in multiple levels.
Begin with Level 1 for basics, or jump to your current understanding. No prerequisites needed.
Progress through levels to deepen your understanding. Each level builds on the previous one.