(isFull(queue)){printf("Queue is full. Cannot enqueue.\n");return;}if(isEmpty(queue)){queue->front=0;}queue->rear++;queue->data[queue->rear]=item;}// 出队intdequeue(Queue*queue){if(isEmpty(queue)){printf("Queue is empty. Cannot dequeue.\n");return-1;}intitem=queue->data[...
Dequeue Operation The steps of dequeue operation are given below: First, we check whether the Queue is empty or not. If the queue is empty, we cannot perform the dequeue operation. When the element is deleted, the value of front gets decremented by 1. If there is only one element left ...
@Overridepublicvoidenqueue(Ee){if(tail==null){tail=newNode(e);head=tail;//第一元素}else{tail.next=newNode(e);//增加元素导致tail标记向后移动一位tail=tail.next;}size++;//维护size}@OverridepublicEdequeue(){if(isEmpty())thrownewIllegalArgumentException("Cannot dequeue from an empty queue")...
@OverridepublicE dequeue() {if(isEmpty())thrownewIllegalArgumentException("Cannot dequeue from an empty queue."); Node retNode=head; head=head.next; retNode.next=null;if(head ==null) tail=null; size++;returnretNode.e; } @OverridepublicE getFront() {if(isEmpty())thrownewIllegalArgument...
*/privatevoidresize(intnewCapactiy){E[]newData=(E[])newObject[newCapactiy+1];for(inti=0;i<size;i++){newData[i]=data[(front+i)%data.length];}data=newData;front=0;tail=size;}@OverridepublicEdequeue(){if(isEmpty()){thrownewIllegalArgumentException("Cannot dequeue from an empty queue...
*@return*/@OverridepublicE dequeue() {if(isEmpty()){thrownewIllegalArgumentException("Cannot dequeue from an empty queue"); } E ret=data[front]; data[front]=null; front= (front + 1) %data.length; size--;if(size == getCapacity() / 4 && getCapacity() / 2 != 0){ ...
public E dequeue(){ if(isEmpty()) { throw new IllegalArgumentException("Cannot dequeue from an empty queue."); } // 出队元素为当前队首元素 E ret = data[front]; data[front] = null; front = (front + 1) % data.length; size --; ...
If it is not deleted and is subsequently retrieved again, the dequeue_count property is incremented. The client may use this value to determine how many times a message has been retrieved. Note that a call to peek_messages does not increment the value of Deq...
[rear]=data;}intdequeue(){if(isEmpty()){printf("Queue is empty. Cannot dequeue.\n");return-1;}intdata=queue[front];if(front==rear){front=-1;rear=-1;}else{front=(front+1)%MAX_SIZE;}returndata;}intpeek(){if(isEmpty()){printf("Queue is empty. Cannot peek.\n");return-1;}...
(tail+1)%data.length;size++;}@OverridepublicTdequeue(){if(isEmpty()){thrownewIllegalArgumentException("Cannot dequeue from an empty queue");}Tret=data[front];data[front]=null;//插入数据时对首标示进行操作front=(front+1)%data.length;size--;if(size==getCapacity()/4&&getCapacity()/2!=0...