July 10, 2026Practice
Linked list and graph technique lessons
Learn's technique track gained two optional lessons, one on walking a linked list and one on exploring a graph with depth-first search.
What changed
- Learn's technique track gained two optional lessons, one on walking a linked list and one on exploring a graph with depth-first search.
- Each lesson has a worked example, a checkpoint, and a practice round, with code in all 17 supported languages.