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package algorithm;
/**
* 641. 设计循环双端队列
* 设计实现双端队列。
* 你的实现需要支持以下操作:
* MyCircularDeque(k):构造函数,双端队列的大小为k。
* insertFront():将一个元素添加到双端队列头部。 如果操作成功返回 true。
* insertLast():将一个元素添加到双端队列尾部。如果操作成功返回 true。
* deleteFront():从双端队列头部删除一个元素。 如果操作成功返回 true。
* deleteLast():从双端队列尾部删除一个元素。如果操作成功返回 true。
* getFront():从双端队列头部获得一个元素。如果双端队列为空,返回 -1。
* getRear():获得双端队列的最后一个元素。如果双端队列为空,返回 -1。
* isEmpty():检查双端队列是否为空。
* isFull():检查双端队列是否满了。
* 链接:https://leetcode-cn.com/problems/design-circular-deque
* *********************************************************************************************************************
* Your MyCircularDeque object will be instantiated and called as such:
* MyCircularDeque obj = new MyCircularDeque(k);
* boolean param_1 = obj.insertFront(value);
* boolean param_2 = obj.insertLast(value);
* boolean param_3 = obj.deleteFront();
* boolean param_4 = obj.deleteLast();
* int param_5 = obj.getFront();
* int param_6 = obj.getRear();
* boolean param_7 = obj.isEmpty();
* boolean param_8 = obj.isFull();
* *********************************************************************************************************************
* 示例:
* MyCircularDeque circularDeque = new MycircularDeque(3); // 设置容量大小为3
* circularDeque.insertLast(1); // 返回 true
* circularDeque.insertLast(2); // 返回 true
* circularDeque.insertFront(3); // 返回 true
* circularDeque.insertFront(4); // 已经满了,返回 false
* circularDeque.getRear(); // 返回 2
* circularDeque.isFull(); // 返回 true
* circularDeque.deleteLast(); // 返回 true
* circularDeque.insertFront(4); // 返回 true
* circularDeque.getFront(); // 返回 4
*/
public class MyCircularDeque {
/** Initialize your data structure here. Set the size of the deque to be k. */
public MyCircularDeque(int k) {
}
/** Adds an item at the front of Deque. Return true if the operation is successful. */
public boolean insertFront(int value) {
return true;
}
/** Adds an item at the rear of Deque. Return true if the operation is successful. */
public boolean insertLast(int value) {
return true;
}
/** Deletes an item from the front of Deque. Return true if the operation is successful. */
public boolean deleteFront() {
return true;
}
/** Deletes an item from the rear of Deque. Return true if the operation is successful. */
public boolean deleteLast() {
return true;
}
/** Get the front item from the deque. */
public int getFront() {
return 2;
}
/** Get the last item from the deque. */
public int getRear() {
return 2;
}
/** Checks whether the circular deque is empty or not. */
public boolean isEmpty() {
return true;
}
/** Checks whether the circular deque is full or not. */
public boolean isFull() {
return true;
}
}