midGraph Theory
Find if a Path exists (Union-Find)
Updated Apr 28, 2026
Short answer
Using Disjoint Set Union to efficiently check connectivity between two nodes.
Deep explanation
Mid-level Graph theory focuses on classic pathfinding and optimization algorithms. Using Disjoint Set Union to efficiently check connectivity between two nodes.
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?