Tools

Depth First Search

1. If there are 10 edges in a graph, in the worst case how many edges can be traversed?

a: 0 b: 1 c: 5 d: 10

2. Which one of the following is correct?

a: DFS uses queue & BFS can be done using stack & recursion. b: In DFS, all the neighbors are traversed before other nodes. c: DFS is a vertex-based algorithm while BFS is an edge-based algorithm. d: BFS is an optimal algorithm while DFS is not optimal.