All Data Structures Posts

2025

Abstract representation of stack data structures and execution flow

Software Engineering

Stacks: Structure, Behavior, and Practical Insight

Undo, the back button and every function call work the same way: last in, first out. How stacks shape memory, execution and everyday code.

Nov 9, 2025 · 5 min readRead

Visualization of fast and slow pointer traversal for cycle detection

Software Engineering

Fast and Slow Pointer Technique: Detecting Cycles and Beyond

How do you tell if a chain of linked records loops back on itself without remembering every step? Send two pointers at different speeds.

Nov 1, 2025 · 3 min readRead

Conceptual visualization of hash tables and data structures

Software Engineering

Understanding HashMaps: Constant-Time Lookups in Practice

Hash maps find any key almost instantly however much data they hold, until they don't. How they work, when they slow down, and what to use instead.

Oct 16, 2025 · 4 min readRead

Abstract visualization of algorithmic efficiency and pointer traversal

Software Engineering

Efficient by Design: The Two-Pointer Pattern and System Performance

Finding matching pairs in a sorted list does not need every combination. Walk inward from both ends and a single pass does it.

Oct 11, 2025 · 4 min readRead

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