优先队列的初步入门

2019.2.27日学习心得

优先队列的使用

#include<iostream>
#include<queue>
#include<cstdio>
#include<algorithm>
using namespace std;
int main()
{
    priority_queue<double>bb;
    bb.push(3.2);
    bb.push(9.8);
    bb.push(9.8);
    bb.push(5.4);
    while (!bb.empty())
    {
        cout << bb.top() << " ";//从大到小输出
        bb.pop;            
    }
    return 0;
}//输出9.8，9.8，5.4，3.2

poriority_queue<double, vector<double>, greater<double>aa;
//按greater方式排序；输出3.2，5.4，9.8，9.8