Graphs in C#
Practice this questionWANT TO UNDERSTAND THE CONCEPT FIRST?Learn Graphs in C#
Problems to practice
- Number of Islands
- Course Schedule
- Clone Graph
- Topological Sort
- BFS and DFS traversal
- Shortest path in unweighted graph
- Union-Find connectivity
Example: BFS using queue
var queue = new Queue<int>();
var visited = new HashSet<int>();
queue.Enqueue(start);
visited.Add(start);
while (queue.Count > 0) {
int node = queue.Dequeue();
foreach (var neighbor in graph[node]) {
if (!visited.Contains(neighbor)) {
visited.Add(neighbor);
queue.Enqueue(neighbor);
}
}
}Adapted from 17_DSA_DOTNET.md · “9. Graphs in C#”. Code examples are study fragments. Difficulty and core labels are editorial estimates; version-specific behavior should be checked against your project.