What is the primary difference between BFS and DFS?

BFS uses a stack, DFS uses a queue
BFS explores nodes level by level, DFS explores as far as possible along a branch
BFS is faster than DFS
DFS is always more memory efficient than BFS

What is the primary difference between BFS and DFS?

Step 1: Understand that BFS stands for Breadth-First Search.
Step 2: Know that BFS explores all the neighbors of a node before moving to the next level.
Step 3: Realize that DFS stands for Depth-First Search.
Step 4: Understand that DFS goes deep into one branch of the tree or graph before backtracking to explore other branches.
Step 5: Remember that BFS uses a queue to keep track of nodes to explore next, while DFS uses a stack (or recursion).
Step 6: Conclude that the primary difference is BFS explores level by level, while DFS goes deep into one path before backtracking.

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