优先队列

 1 #include<iostream>
 2 #include<queue> 
 3 #include<vector> 
 4 using namespace std;
 5 
 6 struct cmp {
 7     bool operator ()(int &a, int &b) {
 8         return a > b;//从小到大
 9     }
10 };
11 
12 int main(){
13     int a[] = { 14,10,56,7,83,22,36,91,3,47 };
14     priority_queue<int>que;
15     priority_queue<int, vector<int>, cmp>que1;
16 
17     for (int i = 0; i < 10; i++) {
18         que.push(a[i]);
19         que1.push(a[i]);
20     }
21 
22     while (!que.empty()) {
23         cout << que.top() << " ";
24         que.pop();
25     }
26 
27     cout << endl;
28     while (!que1.empty()) {
29         cout << que1.top() << " ";
30         que1.pop();
31     }
32 
33     system("pause");
34     return 0;
35 }