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Stack and Queue in C++ STL The C++ Standard Library provides implementations of both stack and queue data structures. These are fundamental containers that follow specific access orders—LIFO (Last In, First Out) for stacks and FIFO (First In, First Out) for queues. Stack Interface push(element): Inserts an element at the top pop(): Removes the ...

A stack is a linear data structure that restricts insertions and deletions to a single endpoint—referred to as the top—while the opposite fixed end is the bottom. When no elements are present, its an empty stack, and its fundamental behavior follows Last-In-First-Out (LIFO) semantics. Static Stack Using Contiguous Memory This implementation lev ...