C++ : Lecture 26: Stack Implementation Using Queue : Mastering Stack Made Simple !

 Mastering Stack Made Simple: Your Easy Guide to Data Structures !

Stack implementation using queue code [C++] :

// Shyam Sunder Kanth

// Insta : still_23.6_8

// ? Stack implementation using Queue

#include<iostream>

#include<queue>

using namespace std;

void push(queue<int> &q1, queue<int> &q2, int data){

    // Step 1: Insert element in q2

    q2.push(data);

    // Step 2: Transfer all elements from q1 to q2

    while(!q1.empty()){

        int ele = q1.front();

        q1.pop();

        q2.push(ele);

    }

    

    // Step 3: Swap both queues

    swap(q1,q2);

}

void pop(queue<int> &q1){

    q1.pop();

}

int top(queue<int> q1){

    return q1.front();

}

int main()

{

    queue<int> q1;

    queue<int> q2;

    push(q1,q2,1);

    push(q1,q2,2);

    push(q1,q2,3);

    push(q1,q2,4);

    pop(q1);

    

    cout<<top(q1);

    return 0;

}

In this comprehensive tutorial, I guide you through the process of implementing a stack data structure using a queue in a step-by-step manner. You will learn the fundamental principles behind both stacks and queues, and how to leverage the FIFO (First In, First Out) property of a queue to emulate the LIFO (Last In, First Out) behavior of a stack. By the end of this tutorial, you will have a solid understanding of how to effectively use queues to create a stack, and how this can be applied in real-world scenarios.

Key Topics Covered:

- Concept

- Implementation

- Code

All codes are available at my GitHub account, check them out here: https://github.com/shyamkanth/Placements

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Timestamps:

0:00 Intro

01:15 Concept

05:15 Implementation

18:20 Code

26:35 Outro

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