Understanding Depth First Search Algorithm

A Comprehensive Guide with Examples in C, C++, Java, Python, and Go | Karthikeyan Nagaraj

Depth First Search (DFS) is a popular search algorithm used for traversing and searching in graphs and trees. It is used to search all the vertices of a graph or all the nodes of a tree in a depthward motion and there by visiting all the vertices of the graph or all the nodes of the tree.

In this article, we will discuss the Depth First Search algorithm in detail, including its concept, working, and implementation in different programming languages like C, C++, Java, Python and Go.

Depth First Search Algorithm

• The Depth First Search algorithm is a traversal algorithm that starts from the root node of a graph or tree and explores as far as possible along each branch before backtracking.
• It uses a stack data structure to keep track of the vertices to be visited next, and adds the unvisited vertices to the stack as it traverses the graph or tree.
• The algorithm continues this process until all the vertices have been visited or the target vertex has been found.
• The depth-first search algorithm can be implemented using either a recursive or an iterative…