Join Raghavendra Dixit for an in-depth discussion in this video Queues, part of Introduction to Data Structures & Algorithms in Java.
- [Instructor] Queues, just like stacks,…are also abstract data types.…That is, they are implemented using some real…concrete data structures like an airy…or a link list.…As the name suggests, the queue data structure…basically is like a bunch of people standing in a queue…at a theater to get in.…So the first guy stands at the front,…and then the next guy behind him, and so on.…So a queue can be thought of as a container…whose front end is called the head,…and the rear end is called the tail.…
And we can insert and remove data elements…from a queue.…Let's see how.…You insert an element into the queue…from the tail end and the element goes forward…as much as it can towards the head…like shown here.…And this operation is called enqueue.…So the enqueue operation inserts a new element…from the tail and sort of pushes it…towards the head of the queue.…We can keep inserting elements like this.…
Now let's see how we can remove an element from a queue.…We remove elements one by one at the head of the queue,…that is the first element at the head…
Note: This course was created by Packt Publishing. We are pleased to host this training in our library.
- Why study data structures and algorithms?
- How to calculate the time complexity
- Using Big O notation
- Using basic sorting and search algorithms
- Searching elements in unordered arrays and ordered arrays
- Implementing a linked list in Java
- Implementing stacks using arrays
- Queues using arrays
- Binary search trees
- Representing heaps using arrays
Skill Level Intermediate
1. Introduction to Algorithms
2. Analysis of Algorithms
3. Basic Sorting and Search Algorithms
4. Linked Lists
5. Stacks and Queues
7. Binary Search Trees
8. More Sorting Algorithms
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