midGraph Theory
What is a Directed Acyclic Graph (DAG)?
Updated Apr 28, 2026
Short answer
A directed graph with no cycles, essential for representing task dependencies.
Deep explanation
Mid-level Graph theory focuses on classic pathfinding and optimization algorithms. A directed graph with no cycles, essential for representing task dependencies.
Real-world example
Google Maps finding the fastest route to a destination.
Common mistakes
- Using Dijkstra on a graph with negative edge weights.
Follow-up questions
- Time complexity of Dijkstra?