Stack is internally implemented in such a way that the element inserted at the last in stack would be the first element to come out of it. The following table highlights all the important differences between stack and queue − Unlike a stack data structure, a queue data structure requires two reference pointers. The term ENQUEUE is used to refer the insertion operation, whereas the term QUEUE is used to refer the deletion operation. In a queue data structure, the insertion operation is performed at the front end while the deletion operation is performed at the rear end. For this reason, the queue data structure is also known as First In First Out (FIFO) list. Consequently, the elements of queue can be removed in the same order of the insertion. What is Queue Data Structure?Ī Queue data structure is also a linear list, but it allows the insertion of elements at one end and deletion of elements at another end. The most and least accessible elements of a stack are referred to as TOP and BOTTOM of the stack. Another important point about the stack data structure is that it requires only one reference pointer. In a stack data structure, the term PUSH is used for the insertion operation, while the term POP is used for the delete operation. For this reason, the stack data structure is also termed as Last In First Out (LIFO) list. Hence, the element that is inserted last will be removed first. What is Stack Data Structure?Ī Stack data structure is a type of linear list which allows the insertion and deletion of elements from one end only. Read this article to learn more about stack and queue data structures and how they are different from each other. A queue data structure is a linear list that allows the insertion of elements at one end and deletion of elements at another end.īoth Stack and Queue are types non-primitive data structures, but we can differentiate the two based on their internal implementation. A stack data structure is a type of linear list which allows the insertion or deletion of an element at one end only. With this brief introduction to data types, let's start this article and differentiate Stack and Queue data structures.īoth Stack and Queue are types of data structures to store data in a particular order. Non-primitive data types are not defined by the programming language, but are instead created by the programmer. Primitive data types are predefined types of data, which are supported by the programming language. Primarily, there are two types of data types − Primitive and Non-primitive.
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