What is stack: Mastering stack problems from easy to hard

Mastering stack problems from easy to hard levels is essential for coding interviews and real-world development. Stacks play a crucial role in app and game development, especially in managing recursion, memory, and user interactions. A Stack is a linear data structure that follows a particular order in which the operations are performed. The order may be LIFO (Last In First Out) or FILO (First In Last Out). A stack is a linear data structure that follows the principle of Last In First Out (LIFO). Learn how to implement a stack in Python, Java, C, and C++, and see some examples of stack applications in compilers and browsers.