fill,fill_n,generate,generate_n

STL 算法实践，直接贴代码：

#include<iostream>
#include<vector>
#include<algorithm>
#include<functional>
using namespace std;
int main(){
	fill_n(ostream_iterator<float>(cout," "),10,7.7);
	cout<<endl;
	vector<int>v;
	fill_n(back_inserter(v),10,10086);
	copy(v.begin(),v.end(),ostream_iterator<int>(cout," "));
	cout<<endl;

	fill(v.begin(),v.end(),10087);
	copy(v.begin(),v.end(),ostream_iterator<int>(cout," "));
	cout<<endl;

	fill_n(v.begin()+2,8,0);
	copy(v.begin(),v.end(),ostream_iterator<int>(cout," "));
	cout<<endl;
	system("pause");
	return 0;
}

#include<iostream>
#include<string>
#include<vector>
#include<algorithm>
#include<ctime>
#include<functional>
using namespace std;
int a(1);
int changsheng(){
	
	return a++;
}
int suiji(){
	return rand()%100;
}
class GaiBian{
public:
	GaiBian(int x):n(x){}
	int operator()(){
		return n++;
	}
private:
	int n;
};
int main(){
	vector<int>v;
	vector<int>vv;
	vv.resize(10);
	generate_n(back_inserter(v),10,changsheng);
	copy(v.begin(),v.end(),ostream_iterator<int>(cout," "));
	cout<<endl;

	generate(vv.begin(),vv.end(),GaiBian(10077));
	for(vector<int>::iterator itera=vv.begin();itera!=vv.end();++itera){
		cout<<*itera<<" ";
	}
	cout<<endl;
	
	srand(unsigned(time(NULL)));
	generate(vv.begin(),vv.end(),suiji);
	copy(vv.begin(),vv.end(),ostream_iterator<int>(cout," "));
	cout<<endl;
	system("pause");
	return 0;
}