1. random_shuffle()          隨機打亂

2. partition()           不穩定的

3. stable_partition()           穩定的

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

template <typename T>
void Print(const T& t)
{
	for(typename T::const_iterator itr=t.begin(); itr!=t.end(); ++itr)
	{
		cout<<*itr<<' ';
	}cout<<endl;
}

int main( int argc, char** argv )
{

	vector<int> vec;
	vector<int> vec1;
	vector<int> vec2;
	for(int i=1; i<=9; ++i)
	{
		vec.push_back(i);
		vec1.push_back(i);
		vec2.push_back(i);
	}
	Print(vec);
	random_shuffle(vec.begin(), vec.end());
	Print(vec);

	vector<int>::iterator pos;
	cout<<endl<<"vec1:"<<endl;
	Print(vec1);
	//pos = partition(vec2.begin(), vec2.end(), not1(bind2nd(modulus<int>(),2)) );
	pos = partition(vec1.begin(), vec1.end(), bind2nd(modulus<int>(),2) );
	Print(vec1);

	cout<<endl<<"vec2:"<<endl;
	Print(vec2);
	stable_partition(vec2.begin(), vec2.end(), bind2nd(modulus<int>(), 2));
	Print(vec2);


	return 0;
}