Which data structure is used to implement depth-first search (DFS) in a binary t
Practice Questions
Q1
Which data structure is used to implement depth-first search (DFS) in a binary tree?
Queue
Stack
Array
Linked List
Questions & Step-by-Step Solutions
Which data structure is used to implement depth-first search (DFS) in a binary tree?
Step 1: Understand what depth-first search (DFS) is. It is a way to explore all the nodes in a binary tree by going as deep as possible before backtracking.
Step 2: Know that DFS can be implemented using a stack. A stack is a data structure that follows the Last In, First Out (LIFO) principle.
Step 3: When you visit a node in the binary tree, you push it onto the stack.
Step 4: If the current node has children, you push the child nodes onto the stack.
Step 5: When you reach a node with no children, you pop the top node from the stack to backtrack and continue the search.
