#include<bits/stdc++.h>usingnamespacestd;structStack{queue<int>q1,q2;voidpush(intx){if(q1.empty()){q2.push(x);//EnQueue operation using STL}else{q1.push(x);//EnQueue operation using STL}}intpop(){intcount,size,item;if(q2.empty()){size=q1.size();//size=no of elements;count=0...
C++ implementation using STL // header file to include all libraries#include<bits/stdc++.h>usingnamespacestd;structQueue{stack<int>s1,s2;// stl used// Enqueue an item to the queuevoidenQueue(intx){// Push item into the first stacks1.push(x);}// Dequeue an item from the queueintdeQue...
// 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()); } } // Removes the e...
//Queue-Linked List Implementation#include<iostream>usingnamespacestd;structnode{intdata; node* next; }; node* front =NULL; node* rear =NULL;//末指针·,则不用遍历整个链表,constant timevoidEnqueue(intx){ node* temp =newnode; temp->data = x; temp->next =NULL;if(front ==NULL&& rear ...
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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. ...
bool isFull():returns true if stack is full, else returns false int size():Returns size of the stack Example: Let the elements inserted are 1, 2, 3, 4 Stack Implementation using Array In C++ Prerequisites: top variable An Array namely stack_array ...
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 stackdefcreate_stack():stack = []returnstack# Cr...
Handling of interrupts in real-time systems. Call Center phone systems use Queues to hold people calling them in order. Recommended Readings Types of Queue Circular Queue Deque Data Structure Priority Queue Previous Tutorial: Stack Did you find this article helpful?
In contrast to the standard FIFO implementation ofQueue, theLifoQueueuses last-in, first-out ordering (normally associated with a stack data structure). Priority Queue Sometimes the processing order of the items in a queue needs to be based on characteristics of those items, rather than just th...