![]() Our take? Knowing how to implement data structures from scratch and performing operations with them will not only enhance your skills as an engineer but also makes you more attractive to potential employers. We'll go through some of the theory behind stacks and queues, and then dive straight into Java code and see how we can implement them from scratch. So how can you implement these? As usual, we’ve got you covered with this tech tutorial. You’ll find these data structures highly used in Computer Science to implement functionality and logic. This time, we’re delving into the fundamental data structures that are stacks, and queues. The source code for this article and other from our data structure series are available on our GitHub repository.In one of our previous articles (which you can find here) we looked at how to implement Linked Lists in Java. we have understood the high-level difference between the stack and the queue.We have learned basic operations of the queue.In this article, we have learned what is a queue data structure.Queue has a circular queue, double-ended queue and priority queue Think it as a horizontal collection of items Think it as a vertical collection of items We used it for solving problems with “recursion” Insertion is called “enqueue” and deletion is called “dequeue” operation Insertion is called “push” and deletion is called “pop” operation ![]() Insertion happens from rear and deletion from front Insertion and deletion happen at a different end of the queue. Only one end “Top” is used for both insertion and deletion of the elements Difference Between Stack and Queue Data Structure Stack Here is the time complexity for Queue OperationĪdvertisements 5. We know it will add a new element at the end of the Queue while it will remove the element on the front of the queue first. With Queue, add and removal are very clear.
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