#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...
The main stack operations are: push (int data):Insertion at top int pop():Deletion from top 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,...
// 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...
Stack implementation in C++ Stack Implementation in C++ using Linked List Remove Character from String in C++ Get Number of Elements in Array in C++ Convert ASCII to Char in C++ Catch All Exceptions in C++ Convert Vector to Array in C++ Print Vector in C++ Count Decimal Places in C++Share...
//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; ...
Array representation of queue which contains 5 elements along with the respective values of front and rear: The above figure shows the queue of numbers. Since, we didn’t perform any deletion in the queue. Therefore, the value of front will remain -1. However the value of rear increases by...
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 So to implement a stack with array what we need to do is to implement those operations. ...
The above declaration declares an array of strings named ‘string_array’ which has 10 elements and the length of each element is not more than 20. We can declare and initialize an array of animals using strings in the following way: ...
The complexity of enqueue and dequeue operations in a queue using an array isO(1). If you usepop(N)in python code, then the complexity might beO(n)depending on the position of the item to be popped. Applications of Queue CPU scheduling, Disk Scheduling ...
For the array-based implementation of a stack, the push and pop operations take constant time, i.e.O(1). Applications of Stack Data Structure Although stack is a simple data structure to implement, it is very powerful. The most common uses of a stack are: ...