Implementing Queue using stack A queue can be implanted using stack also. We need two stacks for implementation. The basic idea behind the implementation is to implement the queue operations (enqueue, dequeue) with stack operations (push, pop). ...
classMyQueue { // Push element x to the back of queue. Stack<Integer> stack =newStack<>(); Stack<Integer> aux =newStack<>(); publicvoidpush(intx) { while(!stack.isEmpty()){ aux.push(stack.pop()); } stack.push(x); while(!aux.isEmpty()){ stack.push(aux.pop()); } } /...
Implementation code using C++ (using STL)#include <bits/stdc++.h> using namespace std; struct Stack{ queue<int> q1,q2; void push(int x){ if(q1.empty()){ q2.push(x); //EnQueue operation using STL } else{ q1.push(x); //EnQueue operation using STL } } int pop(){ int count,...
After the deletion value, we will increment the value of the front position by 1. So now, the new value of the front and rear will be 2 and 3 respectively. Program for the Implementation of Queue using Array: We have already seen how an array can be used to implement a queue. Now,...
Operation on Queue Basic operations: C++ implementation This article is about queue implementation using array in C++. Queue as an Abstract data Type Queue is an ordered data structure to store datatypes in FIFO (First in First Out) order. That means the element which enters first is first to...
//Stack-array based implementation#include<iostream>usingnamespacestd;#defineMAX_SIZE 101intA[MAX_SIZE];//globleinttop =-1;//globlevoidpush(intx){if(top == MAX_SIZE -1) { cout <<"error:stack overflow"<< endl;return; } A[++top] = x; ...
Working of queue: We can implement queue by using two pointers i.e. FRONT and REAR. FRONT is used to track the first element of the queue. REAR is used to track the last element of the queue. Initially, we’ll set the values of FRONT and REAR to -1. ...
Learn how to implement Stack data structure in Java using a simple Array and using Stack class in Java with complete code examples and functions like pop, push.
<queue> #include <ranges> #include <stack> #include <stdexcept> #include <string> #include <tuple> #include <type_traits> #include <utility> #include <variant> #include <vector> // is_reservable concept template<class T> concept is_reservable = requires(T input) { input.reserve(1); }...
Working of Stack Data Structure Stack Implementations in Python, Java, C, and C++ The most common stack implementation is using arrays, but it can also be implemented using lists. Python Java C C++ # Stack implementation in python # Creating a stack def create_stack(): stack = [] return...