In this article, we will look at how to evaluate a given Postfix expression to a result value. This is a problem related to Stack Data Structure. We will look at the algorithm with a step-by-step example along with the implementation in code. Let us first have a quick look at Postfix Expressions. So, Postfix …
In this tutorial you will learn about implementation of Depth First Search in Java with example. To traverse in trees we have traversal algorithms like inorder, preorder, postorder. Same way to traverse in graphs we have mainly two types of algorithms called DFS (Depth First Search) and BFS (Breadth First Search). In Depth First Search …
Here you will get Breadth First Search (BFS) Java program along with example. Breadth First Search is graph traversal algorithm which has many applications in most of the algorithms. We will start with one node and we will explore all the nodes (neighbor nodes) in the same level. Then we should go to next level …
Here you will get program to implement singly linked list in Java. Linked list is a linear data structure. It contains different nodes. Each node will store data and reference to the next node. This is the most useful data structure in computer science in construction of trees especially.