假设以带头结点的单向循环链表表示队列,并且只设一个指针指向队尾元素结点(注意:不设头指针),试设计并验证相应的队列初始化、队列判空、入队列、出队列和遍历队列算法。
时间: 2024-04-21 18:07:04 浏览: 58
数据结构算法-习题-答案-带头结点的循环链表表示队列,并且只设一个指针指向队尾元素结点注意不设头指针.docx
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好的,我可以为您提供所需的算法。
1. 队列初始化
```
void initQueue(Node* &rear) {
rear = NULL;
}
```
2. 队列判空
```
bool isEmpty(Node* rear) {
return rear == NULL;
}
```
3. 入队列
```
void enQueue(Node* &rear, int value) {
Node* newNode = new Node;
newNode->data = value;
if (rear == NULL) {
rear = newNode;
newNode->next = rear;
} else {
newNode->next = rear->next;
rear->next = newNode;
rear = newNode;
}
}
```
4. 出队列
```
bool deQueue(Node* &rear, int &value) {
if (rear == NULL) {
return false;
}
if (rear->next == rear) {
value = rear->data;
delete rear;
rear = NULL;
} else {
Node* p = rear->next;
value = p->data;
rear->next = p->next;
delete p;
}
return true;
}
```
5. 遍历队列
```
void traverseQueue(Node* rear) {
if (rear == NULL) {
return;
}
Node* p = rear->next;
while (p != rear) {
cout << p->data << " ";
p = p->next;
}
cout << p->data << endl;
}
```
可以通过以下方式进行测试:
```
int main() {
Node* rear;
initQueue(rear);
enQueue(rear, 1);
enQueue(rear, 2);
enQueue(rear, 3);
traverseQueue(rear);
int value;
deQueue(rear, value);
traverseQueue(rear);
return 0;
}
```
输出结果:
```
1 2 3
2 3
```
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