copy,copy_backward,swap,transform

最新推荐文章于 2025-11-26 15:59:01 发布

最新推荐文章于 2025-11-26 15:59:01 发布 · 68 阅读

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#java

本文通过多个实例详细介绍了STL算法的应用，包括数据复制、转换、范围交换等操作，并展示了如何使用这些算法进行高效的编程。

STL 算法

#include<iostream>
#include<string>
#include<vector>
using namespace std;
int main(){
	vector<int>v;
	vector<int>vv;
	for(int i=1;i<=9;++i){
		v.push_back(i);
	}
	copy(v.begin(),v.end(),back_inserter(vv));
	for(vector<int>::iterator itera=vv.begin();itera!=vv.end();++itera){
		cout<<*itera<<" ";
	}
	cout<<endl;
	copy(vv.begin(),vv.end(),ostream_iterator<int>(cout," "));
	cout<<endl;

	copy(v.begin(),v.end(),vv.rbegin());
	copy(vv.begin(),vv.end(),ostream_iterator<int>(cout," "));
	cout<<endl;
	system("pause");
	return 0;
}

#include<iostream>
#include<string>
#include<vector>
#include<deque>
#include<algorithm>
using namespace std;
int main(){
	int a[]={1,2,3,4,5,6,7,8,9};
	vector<int>v;
	vector<int>vv(a,a+9);
	
	for(int i=1;i<=9;++i){
		v.push_back(i);
	}
	v.resize(v.size()+10);
	vv.resize(vv.size()+10);
	copy_backward(v.begin(),v.begin()+9,v.end());
	copy(v.begin(),v.end(),ostream_iterator<int>(cout," "));
	cout<<endl;
	copy(vv.begin(),vv.begin()+9,vv.begin()+10);
	copy(vv.begin(),vv.end(),ostream_iterator<int>(cout," "));
	cout<<endl;
	system("pause");
	return 0;
}


#include<iostream>
#include<vector>
#include<algorithm>
#include<functional>
using namespace std;
int main(){
	vector<int>v;
	vector<int>vv;
	for(int i=1;i<=9;++i){
		v.push_back(i);
	}
	transform(v.begin(),v.end(),back_inserter(vv),bind2nd(plus<int>(),10));
	copy(vv.begin(),vv.end(),ostream_iterator<int>(cout," "));
	cout<<endl;

	transform(vv.begin(),vv.end(),vv.begin(),negate<int>());
	copy(vv.begin(),vv.end(),ostream_iterator<int>(cout," "));
	cout<<endl;

	transform(vv.begin(),vv.end(),vv.begin(),bind2nd(multiplies<int>(),2));
	copy(vv.begin(),vv.end(),ostream_iterator<int>(cout," "));
	cout<<endl;
	system("pause");
	return 0;
}

#include<iostream>
#include<string>
#include<vector>
#include<algorithm>
#include<functional>
using namespace std;
int main(){
	int a[]={1,2,3,4,5,6,7,8,9,10};
	int b[]={2,2,2,2,2,2,2,2,2,2};
	vector<int>v(a,a+10);
	vector<int>vv(b,b+10);
	transform(v.begin(),v.end(),v.begin(),v.begin(),multiplies<int>());
	copy(v.begin(),v.end(),ostream_iterator<int>(cout," "));
	cout<<endl;

	transform(v.begin(),v.end(),vv.begin(),v.begin(),minus<int>());
	copy(v.begin(),v.end(),ostream_iterator<int>(cout," "));
	cout<<endl;

	transform(v.begin(),v.end(),vv.begin(),v.begin(),plus<int>());
	copy(v.begin(),v.end(),ostream_iterator<int>(cout," "));
	cout<<endl;
	system("pause");
	return 0;
}

#include<iostream>
#include<string>
#include<deque>
#include<vector>
#include<functional>
#include<algorithm>
using namespace std;
int main(){
	int a[]={1,2,3,4,5,6,7,8,9,10};
	int b[]={11,22,33,44,55,66,77,88,99,1010,1111};
	vector<int>v(a,a+10);
	deque<int>d(b,b+11);
	//只有两个容器类型相同的时候才能用vector<int>v,vector<int>d, v.swap(d);
	swap_ranges(v.begin(),v.end(),d.begin());
	copy(v.begin(),v.end(),ostream_iterator<int>(cout," "));
	cout<<endl;
	copy(d.begin(),d.end(),ostream_iterator<int>(cout," "));
	cout<<endl;

	system("pause");
	return 0;
}