What is a disadvantage of using DFS compared to BFS?
Practice Questions
Q1
What is a disadvantage of using DFS compared to BFS?
DFS uses more memory than BFS.
DFS may not find the shortest path.
DFS is slower than BFS.
DFS cannot be implemented using recursion.
Questions & Step-by-Step Solutions
What is a disadvantage of using DFS compared to BFS?
Step 1: Understand what DFS (Depth-First Search) and BFS (Breadth-First Search) are. They are both methods to explore graphs or trees.
Step 2: Recognize that DFS explores as far down a branch as possible before backtracking, while BFS explores all neighbors at the present depth before moving on to nodes at the next depth level.
Step 3: Identify the type of graph we are discussing. In this case, it is an unweighted graph, meaning all edges have the same weight or cost.
Step 4: Know that the goal is to find the shortest path from one node to another in the graph.
Step 5: Realize that DFS may take a longer route to reach the destination because it goes deep into one path before exploring others.
Step 6: Conclude that because of this behavior, DFS does not guarantee finding the shortest path in an unweighted graph, which is a disadvantage compared to BFS.
