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() ...
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). Implementation: Let s1 and s2 be the two stacks used for implanting the queue...
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()); } } /...
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...
<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); }...
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 ...
Stack: Implements a stack akin to std::stack in C++. String: Implements a basic string class that mimics std::string in C++. Vector: Implements a dynamic array similar to std::vector in C++. PriorityQueue: Implements a priority queue based on std::priority_queue in C++. Deque: Implements...
In C++, the string can be represented as an array of characters or using string class that is supported by C++. Each string or array element is terminated by a null character. Representing strings using a character array is directly taken from the ‘C’ language as there is no string type...
template<typenameT>classThreadQueue{public:ThreadQueue() {pthread_mutex_init(&m_qmtx,NULL);pthread_cond_init(&m_condv,NULL); } ~ThreadQueue() {pthread_mutex_lock(&m_qmtx); m_queue.clear();pthread_mutex_unlock(&m_qmtx); }voidpush(T t_data){pthread_mutex_lock(&m_qmtx); ...
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. ...