System.out.println("Queue is empty, cannot peek item.");return-1; }returndata[front]; } } 复制代码 使用示例: publicclassMain{publicstaticvoidmain(String[] args){Queuequeue=newQueue(5);queue.enqueue(1);queue.enqueue(2)
While removing (dequeue) elements from the queue we also have two special cases: Queue is empty - in that casefrontandrearboth will be equal to -1 and as there are no elements in the queue we cannot perform dequeue operation. Queue has only one element - in that casefrontwill be equal...
*@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){ resize(getCa...
@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...
(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...
public T dequeue() { T temp = top.item; top = top.next; number--; if (isEmpty()) last = null; return temp; } 完整的伪代码如下: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 /** * Created by zzw on 2017/6/28. * Version: * Des: */ public class MyQuery<T> { priva...
(tail + 1) % data.length; size++; } @Override public E dequeue() {//从队首出队 O(1) if (isEmpty()) { throw new IllegalArgumentException("Cannot dequeue from an empty queue."); } E e = data[front]; data[front] = null; front = (front + 1) % data.length; size--; if ...
next; } size++; //维护size } @Override public E dequeue() { if (isEmpty()) throw new IllegalArgumentException("Cannot dequeue from an empty queue"); Node retNode = head; //删除元素导致head标记向后移动一位 head = head.next; retNode.next = null; // 断开连接,被Java自动回收机制回收...
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 (isEmpty()) throw new IllegalArgumentException("Cannot dequeue from an empty queue"); Node retNode = head; //删除元素导致head标记向后移动一位 head = head.next; retNode.next = null; // 断开连接,被Java自动回收机制回收 if (head == null) ...