Stack and Queue in Java | Example Tutorial | Code Below

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Hello hello, everybody, today in this video I will show you how to use Stack and Queue in Java. This is one of the most popular programming techniques in Java.

A Stack is a linear data structure. In case of an array, random access is possible, i.e., any element of an array can be accessed at any time, whereas in a stack, the sequential access is only possible. It is a container that follows the insertion and deletion rule. It follows the principle LIFO (Last In First Out) in which the insertion and deletion take place from one side known as a top. In stack, we can insert the elements of a similar data type, i.e., the different data type elements cannot be inserted in the same stack. The two operations are performed in LIFO, i.e., push and pop operation.

A Queue is a linear data structure. It is an ordered list that follows the principle FIFO (First In -First Out). A Queue is a structure that follows some restrictions on insertion and deletion. In the case of Queue, insertion is performed from one end, and that end is known as a rear end. The deletion is performed from another end, and that end is known as a front end. In Queue, the technical words for insertion and deletion are enqueue() and dequeue(), respectively whereas, in the case of the stack, the technical words for insertion and deletion are push() and pop(), respectively. Its structure contains two pointers front pointer and rear pointer, where the front pointer is a pointer that points to the element that was first added in the queue and the rear pointer that points to the element inserted last in the queue.


More array-based problems for practice
http://javarevisited.blogspot.sg/2014/11/how-to-find-missing-number-on-integer-array-java.html
http://javarevisited.blogspot.sg/2014/01/how-to-remove-duplicates-from-array-java-without-collection-API.html
http://java67.com/2014/11/how-to-test-if-array-contains-certain-value-in-java.html
http://java67.blogspot.sg/2014/02/how-to-find-largest-and-smallest-number-array-in-java.html
https://javarevisited.blogspot.com/2015/06/top-20-array-interview-questions-and-answers.html
https://medium.com/javarevisited/20-array-coding-problems-and-questions-from-programming-interviews-869b475b9121
https://javarevisited.blogspot.com/2018/01/top-10-udemy-courses-for-java-and-web-developers.html
https://javarevisited.blogspot.com/2019/10/top-5-coursera-professional-certificates-for-programmers-IT-professionals.html

I have also posted a GitHub link to the code.
https://github.com/LongLong2310/Javarevisited/blob/f10fffcf974f8a5ad39f41349d2b5af7b25a2029/stackAndQueue.java

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Stack and Queue


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