不用自己写堆啦,懒人必备,比如我。
整理了操作:
#include<bits/stdc++.h>
#define il inline
#define pb push_back
#define fi first
#define se second
#define ms(_data,v) memset(_data,v,sizeof(_data))
using namespace std;
typedef long long ll;
const ll inf=0x3f3f3f3f;
bool cmp(int x,int y){return x>y;} //小堆 或者用 greater<int>()
bool CMP(int x,int y){return x<y;} //大堆
int main(){
std::ios::sync_with_stdio(0);
int a[]={1,2,-199,122,88};
vector<int> mx(a,a+5),mi(a,a+5);
//建堆
make_heap(mx.begin(),mx.end());//默认大堆
make_heap(mi.begin(),mi.end(),cmp);//小堆
//输出堆顶
cout<<mx.front()<<" "<<mi.front()<<endl;
//插入元素
mx.pb(77),push_heap(mx.begin(),mx.end());
mi.pb(77),push_heap(mi.begin(),mi.end(),cmp); //更新也要cmp哦
//弹出堆顶元素
pop_heap(mx.begin(),mx.end()),mx.pop_back();
pop_heap(mi.begin(),mi.end(),cmp),mi.pop_back(); //也要加
return 0;
}