//版本一 
template <class RandomAccessIterator>
void sort(RandomAccessIterator first,RandomAccessIterator last);
//版本二 
template <class RandomAccessIterator,class StrictWeakOrdering)
void sort(RandomAccessIterator first,RandomAccessIterator last,StrictWeakOrdering cmp);

//版本一 
template <class RandomAccessIterator>
void stable_sort(RandomAccessIterator first,RandomAccessIterator last);
//版本二 
template <class RandomAccessIterator,class StrictWeakOrdering)
void stable_sort(RandomAccessIterator first,RandomAccessIterator last,StrictWeakOrdering cmp);

#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;

class F
{
    public:
        bool operator()(int i,int j)
        {
            return (i%10)>=(j%10);    
        }    
};
int main()
{
    vector<int> v{2,1,-1,5,6,3};
    sort(v.begin(),v.end(),F());
    for_each(v.begin(),v.end(),[](int i)
    {
        cout<<i<<" ";
    });
    cout<<endl;
    return 0;    
}