Write a java program that implements the dfs algorithm
Join Stack Overflow to learn, share knowledge, and build your career. Connect and share knowledge within a single location that is structured and easy to search. I have spent lots of time on this issue. However, I can only find solutions with non-recursive methods for a tree: Non recursive for tree , or a recursive method for the graph, Recursive for graph. And lots of tutorials I don't provide those links here don't provide the approaches as well. Or the tutorial is totally incorrect.
Implementing a Depth First Search (DFS) and a Breadth First Search (BFS) with Java 8 Streams
Java Program for First Come First Serve (FCFS) Scheduling Algorithm - The Java Programmer
We start with node It then visits node 20, node 50, node 70 respectively as they are directly connected. After that, it backtracks to node 20 and visited node 60, node 30 and node 10 respectively. Recursive Depth first search can be implemented using recursion too. We do not need to maintain external stack, it will be taken care by recursion. Here is the complete java program for DFS implementation for iterative as well as recursive method. Hibernate is most popular Object relational Mapping ORM framework and if you have used hibernate and has good experience on it, then you may face good hibernate interview questions.
Not least because it is a standard job interview question. Before we start with the implementation of the algorithms, we need a class for the nodes. Thanks to Alexey Polyakov for pointing out that I can simplify getChildren. This is the node class.
The only catch here is, unlike trees, graphs may contain cycles, so a node might be visited twice. To avoid processing a node more than once, use a boolean visited array. Skip to content. Related Articles.