"In computer science, a stack is an abstract data type that serves as a collection of elements."
These are data structures for storing and retrieving data in a specific order. Queues follow a First In First Out (FIFO) order while Stacks follow a Last In First Out (LIFO) order.
Abstract data types: This topic covers the concept of data types and how they are used to organize and manipulate data in computer science.
Linear data structures: This topic covers the most basic type of data structure that stores elements in a sequential order, like an array or a list.
Stack Data Structure: A stack is a linear data structure in which elements are added and removed from one end.
Queue Data Structure: A queue is a linear data structure in which elements are added from one end of the structure and removed from the other end.
Linked Lists: A linked list is a data structure that consists of a sequence of nodes, each pointing to the next node in the sequence.
Array-based List: An array-based list is a data structure that uses arrays to implement a list.
Stack Array: A stack can be implemented using an array data structure.
Queue Arrays: Similarly, a queue can also be implemented using an array.
Stacks and Queues in Real-world scenarios: This topic covers the applications of stack and queue in various real-world problems.
Algorithms: This topic covers the various algorithms used to implement stack and queue data structures, such as push, pop, enqueue, and dequeue.
Time and Space complexity: This topic covers the analysis of time and space complexity of algorithms used in stack and queue data structures.
Stack and Queue Problems: This topic covers different Stack and Queue Problems such as infix-postfix conversion, reverse a stack using recursion, and many more.
Deque( Double-ended Queue): A Deque is a linear data structure that is a generalization of a stack and a queue that allows insertion and deletion of elements from both front and rear.
Priority Queue: A priority queue is an abstract data type that is similar to a queue, but each element has a priority value.
Queue Implementation: This topic covers the various implementations of queue data structure such as using an array, linked list, and circular queue.
Stack Implementation: This topic covers the implementation of stacks using an array, linked list, and dynamic array.
Simple Queue: A linear data structure where items are added at one end and removed from the other.
Circular Queue: A variation of the simple queue, where the last item is connected back to the first item to form a circle.
Priority Queue: Orders items based on priority, with the highest priority item being removed first.
Double-ended Queue: Also known as a deque, allows insertion and removal of items from both ends.
De-prioritizing Queue: Reverses the priority order of a priority queue, so that the lowest priority item is removed first.
Concurrent Queue: Allows multiple threads to safely add and remove items from the queue at the same time.
Vector Queue: Stores items in a vector, with insertion and removal performed in constant time.
Simple Stack: A linear data structure where items are added to the top and removed from the same.
Array Stack: A stack implemented using an array for storage.
Linked Stack: A stack implemented using a linked list for storage.
Expression Stack: Used in computer science to evaluate arithmetic expressions.
Undo Stack: Used in computer applications to undo previous actions.
Concurrent Stack: Allows multiple threads to safely push and pop items from the stack at the same time.
Min Stack: Stores the minimum value in the stack, allowing for constant time retrieval.
"Push, which adds an element to the collection, and Pop, which removes the most recently added element that was not yet removed."
"Additionally, a peek operation can, without modifying the stack, return the value of the last element added."
"The order in which an element added to or removed from a stack is described as last in, first out, referred to by the acronym LIFO."
"Accessing a datum deeper in the stack may require taking off multiple other items first."
"The push and pop operations occur only at one end of the structure, referred to as the top of the stack."
"A stack may be implemented to have a bounded capacity." - "This data structure makes it possible to implement a stack as a singly linked list and as a pointer to the top element."
"If the stack is full and does not contain enough space to accept another element, the stack is in a state of stack overflow."
"A stack is an abstract data type that serves as a collection of elements."
"Calling this structure a stack is by analogy to a set of physical items stacked one atop another, such as a stack of plates."
"The order in which an element added to or removed from a stack is described as last in, first out (LIFO)."
"Calling this structure a stack is by analogy to a set of physical items stacked one atop another, such as a stack of plates."
"A peek operation can, without modifying the stack, return the value of the last element added."
"A stack is needed to implement depth-first search."
"This data structure makes it possible to implement a stack as a singly linked list."
"If the stack is full and does not contain enough space to accept another element, the stack is in a state of stack overflow."
"A stack may be implemented to have a bounded capacity."
"Push, which adds an element to the collection…"
"Pop… removes the most recently added element that was not yet removed."
"This structure makes it easy to take an item off the top of the stack."