For the implementation of queue, we need to initialize two pointers i.e. front and rear, we insert an element from the rear and remove the element from the front, and if we increment the rear and front pointer w
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...
Array.Copy(_array, _head, newarray, 0, _array.Length - _head); //再复制数组0标到尾 Array.Copy(_array, 0, newarray, _array.Length - _head, _tail); } } _array = newarray; _head = 0; _tail = (_size == capacity) ? 0 : _size; //_size 是指原_array不为空元素的数量 _...
SET(CMAKE_BUILD_TYPE "Debug") # Check for memory leaks SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=leak -fsanitize=address") add_executable(${PROJECT_NAME} ${PROJECT_NAME}.cpp) find_package(Threads REQUIRED) # libatomic should be linked to the program. # Otherwise, the follow...
C C++ # Queue implementation in PythonclassQueue():def__init__(self, k):self.k = k self.queue = [None] * k self.head = self.tail =-1# Insert an element into the queuedefenqueue(self, data):if(self.tail == self.k -1):print("The queue is full\n")elif(self.head ==-1)...
siftUpComparable(n, e, array); else // 进行上浮操作。 siftUpUsingComparator(n, e, array, cmp); // 实际长度增加1,由于有且仅有一个线程操作队列,所以这里并没有使用原子性操作。 size = n + 1; // 通知等待的线程,队列已经有数据,可以获取数据。 notEmpty.signal(); } finally { // 解锁操作...
The most common queue implementation is using arrays, but it can also be implemented using lists. Python Java C C++ # Circular Queue implementation in PythonclassMyCircularQueue():def__init__(self, k):self.k = k self.queue = [None] * k self.head = self.tail =-1# Insert an element...
To understand the circular implementation, think of the array as a circle. When an element is dequeued, the Queue doesn't shift all of the elements forward to the start of the queue. Instead, the class shifts the start of the queue back. Eventually, the start of the queue will have shi...
Java Queue interface extends Collection interface. Collection interface extends Iterable interface. Some of the frequently used Queue implementation classes are LinkedList, PriorityQueue, ArrayBlockingQueue, DelayQueue, LinkedBlockingQueue, PriorityBlockingQueue etc.. AbstractQueue provides a skeletal implementation...
ustd provides minimal and highly portable implementations of the following classes: ustd::array, a lightweight c++11 array implementation (ustd_array.h). ustd::queue, a lightweight c++11 queue implementation (ustd_queue.h). ustd::map, a lightweight c++11 map implementation (ustd_map.h)...