C++ STL Heap算法
#include <iostream>
#include <algorithm>
#include <vector>
using namespace std;
int main()
{
vector<int> vec1;
vector<int>::iterator vec_iter1;
for (int k=0;k<10;k++)
{
vec1.push_back(rand());
}
for (vec_iter1 = vec1.begin();vec_iter1 != vec1.end();++vec_iter1)
{
cout << *vec_iter1 << " ";
}
cout << endl;
cout << "-------------------------------------------------------" << endl;
make_heap(vec1.begin(), vec1.end());
for (vec_iter1 = vec1.begin(); vec_iter1 != vec1.end(); ++vec_iter1)
{
cout << *vec_iter1 << " ";
}
cout << endl;
cout << "-------------------------------------------------------" << endl;
//取出堆中最大的数放到最后面,剩下的重新排
pop_heap(vec1.begin(), vec1.end());
for (vec_iter1 = vec1.begin(); vec_iter1 != vec1.end(); ++vec_iter1)
{
cout << *vec_iter1 << " ";
}
cout << endl;
cout << "-------------------------------------------------------" << endl;
//删除最后一个
vec1.pop_back();
for (vec_iter1 = vec1.begin(); vec_iter1 != vec1.end(); ++vec_iter1)
{
cout << *vec_iter1 << " ";
}
cout << endl;
cout << "-------------------------------------------------------" << endl;
vec1.push_back(100);
for (vec_iter1 = vec1.begin(); vec_iter1 != vec1.end(); ++vec_iter1)
{
cout << *vec_iter1 << " ";
}
cout << endl;
cout << "-------------------------------------------------------" << endl;
push_heap(vec1.begin(),vec1.end());
for (vec_iter1 = vec1.begin(); vec_iter1 != vec1.end(); ++vec_iter1)
{
cout << *vec_iter1 << " ";
}
cout << endl;
cout << "-------------------------------------------------------" << endl;
sort_heap(vec1.begin(), vec1.end());
for (vec_iter1 = vec1.begin(); vec_iter1 != vec1.end(); ++vec_iter1)
{
cout << *vec_iter1 << " ";
}
cout << endl;
cout << "-------------------------------------------------------" << endl;
system("pause");
return 0;
}
=============================================================
41 18467 6334 26500 19169 15724 11478 29358 26962 24464
-------------------------------------------------------
29358 26962 15724 26500 24464 6334 11478 41 18467 19169
-------------------------------------------------------
26962 26500 15724 19169 24464 6334 11478 41 18467 29358
-------------------------------------------------------
26962 26500 15724 19169 24464 6334 11478 41 18467
-------------------------------------------------------
26962 26500 15724 19169 24464 6334 11478 41 18467 100
-------------------------------------------------------
26962 26500 15724 19169 24464 6334 11478 41 18467 100
-------------------------------------------------------
41 100 6334 11478 15724 18467 19169 24464 26500 26962
-------------------------------------------------------
请按任意键继续. . .