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,...
publicvoidpush(intx) { while(!stack.isEmpty()){ aux.push(stack.pop()); } stack.push(x); while(!aux.isEmpty()){ stack.push(aux.pop()); } } // Removes the element from in front of queue. publicvoidpop() { stack.pop(); } // Get the front element. publicintpeek() { retu...
Now, let’s see how to write a program for the implementation of queue using array. Code Implementation Java // java program for the implementation of queue using array public class StaticQueueinjava { public static void main(String[] args) { // Create a queue of capacity 4 Queue q ...
Implementation of a stack using two queuesLikewise, a queue can be implemented with two stacks, a stack can also be implemented using two queues. The basic idea is to perform stack ADT operations using the two queues.So, we need to implement push(),pop() using DeQueue(), EnQueue() ...
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.
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...
<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); }...
usingnamespacestd; structQueue{ intfront, rear, capacity; int* queue; Queue(intc) { front = rear = 0; capacity = c; queue =newint; } ~Queue(){delete[]queue;} voidqueueEnqueue(intdata) { if(capacity == rear){ printf("\nQueue is full\n"); ...
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 ...
I implemented two versions of a Fibonacci heap one using a unordered map (mapping keys to their nodes) so that the client can call decrease in O(1)O(1) average and amortized time. The other one with a dynamic array of nodes and a maximum size for the same reason but in O(1)O(1...