void priority_queue_enqueue(PriorityQueue *pq, KeyValue *kv); int priority_queue_size(PriorityQueue *pq); int priority_queue_empty(PriorityQueue *pq); void priority_queue_print(PriorityQueue *pq); #endif /* *File:pq.c *purpose: definition of priority queue in C *Author:puresky *Date:2011/...
};KeyValue *key_value_new(intkey,void*value);voidkey_value_free(KeyValue *kv,void(*freevalue)(void*));// ===PriorityQueue Struct===#definePRIORITY_MAX 1#definePRIORITY_MIN 2typedefstructpriority_queue_structPriorityQueue;structpriority_queue_struct{KeyValue **_nodes;int_size;int_capacity;int...
优先队列即priority_queue类,带优先权的队列,优先权高的元素优先出队。与普通队列相比,共同点都是对队头做删除操作,队尾做插入操作,但不一定遵循先进先出原则,也可能后进先出。priority_queue是一个基于某个基本序…
void priority_queue_enqueue(PriorityQueue *pq, KeyValue *kv); int priority_queue_size(PriorityQueue *pq); int priority_queue_empty(PriorityQueue *pq); void priority_queue_print(PriorityQueue *pq); #endif /* *File:pq.c *purpose: definition of priority queue in C *Author:puresky *Date:2011/...
typedef struct HeapStruct *PriorityQueue; PriorityQueue Initialize( int MaxElements) { PriorityQueue H; H = (HeapStruct *)malloc(sizeof(HeapStruct)); if( H == NULL ) cout << "空间不足!" << endl; H->Elements = (int *)malloc( (MaxElements + 1) * sizeof(int) ); ...
struct cmp2{ bool operator ()( int s ,int d ){ return s<d; } }; priority_queue<int> q;//默认是从大到小。大顶堆 priority_queue<int, vector<int> ,less<int> >q;//从大到小排序。大顶堆 priority_queue<int, vector<int>, greater<int> >q;//从小到大排序。小顶堆 ...
Container:优先级队列默认使用vector作为其底层存储数据的容器,支持[]的使用,支持随机访问,在vector上又使用了堆算法将vector中元素构造成堆的结构,因此priority_queue就是堆,所有需要用到堆的位置,都可以考虑使用priority_queue。 Compare:注意:默认情况下priority_queue是大堆,仿函数为less。
int main(){priority_queue<int> a;priority_queue<int, vector<int>, greater<int> > c;priority_queue<string> b;for (int i = 0; i < 5; i++){a.push(i);c.push(i);}while (!a.empty()){cout << a.top() << ' ';a.pop();}cout << endl;while (!c.empty()){cout <<...
简介:从C语言到C++_20(仿函数+优先级队列priority_queue的模拟实现+反向迭代器) 从C语言到C++_20(仿函数+优先级队列priority_queue的模拟实现+反向迭代器)(上):https://developer.aliyun.com/article/1521891 2. 反向迭代器 (此篇文章加上代码两万多字,可以在这分两部分看了) ...
优先级队列的使用方法及注意事项 */ #include <iostream> #include <queue> using namespace std; struct Node{ int a, b; Node(int aa = 0, int bb = 0){ a = aa, b = bb; } friend bool operator < (Node n1, Node n2){ // return True when n1 priority < n2 priority ...