How to Copy a Stack in C++? Last Updated : 04 Mar, 2024 Comments Improve Suggest changes Like Article Like Report In C++, stacks are a type of container adaptor with a LIFO(Last In First Out) type of working, where a new element is added at one end (top) and an element is removed from that end only. In this article, we are going to discuss how to copy a stack in C++. Copying a Stack to Another in C++To copy a std::stack, we can simply use the copy constructor or copy assignment operator of std::stack that takes another stack as a parameter and creates a new stack with the same elements. Syntaxstack<type> myStack2(myStack1); // copy constructor myStack2 = myStack1 // copy assignment operatorC++ Program to Copy a Stack C++ // C++ program to illustrate how to copy a stack #include <iostream> #include <stack> using namespace std; int main() { // Declaring a stack of integers stack<int> originalStack; // Pushing integers into the original stack originalStack.push(1); originalStack.push(2); originalStack.push(3); // Copying the original stack to a new stack stack<int> newStack = originalStack; // Checking if the new stack is empty if (newStack.empty()) { cout << "New stack is empty." << endl; } else { cout << "New stack is not empty." << endl; } return 0; } OutputNew stack is not empty. Time complexity: O(N), where n is the number of elements in the stack.Auxiliary space: O(N) Comment More infoAdvertise with us Next Article How to Copy a Stack in C++? bug8wdqo Follow Improve Article Tags : C++ Programs C++ STL cpp-stack CPP Examples +1 More Practice Tags : CPPSTL Similar Reads How to Clear a Stack in C++? In C++, clearing a stack means removing all element from the stack container leaving it empty. In this article, we will learn how to clear a stack in C++.The most efficient method to clear a stack is by assigning the new empty stack to our original stack container. Let's take a look at the code exam 3 min read How to Declare a Stack in C++? In C++, Stacks are a type of container adaptor with LIFO(Last In First Out) type of working, where a new element is added at one end (top) and an element is removed from that end only. In this article, we will learn how to declare a stack in C++. Declaring a Stack in C++ STLThe C++ STL provides a co 2 min read How to Copy a List in C++ STL? In C++, a list is a sequence container provided by the STL library that represents a doubly linked list and allows us to store data in non-contiguous memory locations efficiently. In this article, we will learn how to copy one list to another in C++. Input: sourceList = {10, 20, 30, 40, 50};Output: 2 min read How to Compare Two Stacks in C++? In C++, a stack is a type of data structure where elements are inserted and removed according to the Last-In-First-Out (LIFO) principle. In this article, we will see how to compare two stacks in C++. Example: Input: stack1 = {10,20,30,40,50}stack2 = {10,20,30,40,50}Output:Stacks are equalComparing T 2 min read How to Reverse a Stack in C++? In C++, stacks are containers that store the elements in the last in-first out order(LIFO). In, this article, we will learn how we can reverse a stack in C++. Example Input: stack<int> S ={5,4,3,2,1} store Output: // Reversed Stack stack<int> S ={1,2,3,4,5}Reverse a Stack in C++We can re 2 min read How to Create a Stack of Map in C++? In C++, the std::stack is a container that follows the LIFO (Last In, First Out) rule, whereas std::map is an associative container that stores key-value pairs. In this article, we will learn how to create a stack of a map in C++. Example:Input: myMap = { {1: ‘a’}, {2: ‘b’}, {3: ‘c’} }; myMap = { {4 2 min read How to Create a Stack of Set in C++? In C++ STL, Stacks are a type of container adaptor with LIFO(Last In First Out) type of working, where a new element is added at one end (top) and an element is removed from that end only. Sets are a type of associative container in which each element is unique and in some sorted order. In this arti 2 min read How to Create a Stack of Stack in C++? In C++, the stack is a container that follows the LIFO (Last In, First Out) order in which the elements are inserted and removed from it. In this article, we will learn how to create a stack of a stack in C++. Example:Input:Elements in stack1= 1, 2, 3, 4Elements in stack2= 5, 6, 7Output:Elements in 2 min read How to Create a Stack of Lists in C++? In C++, a list is a sequence container that allows dynamic insertion and deletion operations, whereas a stack is a data structure that follows last-in, first-out (LIFO). In this article, we will learn how to create a stack of lists in C++. Example: Input: list1 = { 1, 2, 3, 4 }list2 = { 5, 6, 7 }Out 2 min read Like