实验一

问题回答

1.reverse 直接在原容器中反转 reverse_copy()复制后反转给到新容器
2.rotate通过挪动元素，（a,b,c）a是起始，c是结束，从b新节点开始把后边的挪到前边

代码

#include<iostream>
#include<string>
#include<vector>
#include<algorithm>
template<typename T>
void output(const T &c);

void test1();
void test2();
void test3();

int main(){
	std::cout<<"测试1：\n";
	test1();
	
	std::cout<<"\n测试2：\n";
	test2();
	
	std::cout<<"\n测试3:\n";
	test3(); 
}
template <typename T>
void output(const T &c){
	for(auto &i : c)
	 std::cout<<i<<' ';
	std::cout<<'\n';
	 
}

void test1(){
	using namespace std;
	
	string s0{"0123456789"};
	cout<<"s0="<<s0<<endl;
	
	string s1(s0);
	
	reverse(s1.begin(),s1.end());
	cout<<"s1="<<s1<<endl;
	
	string s2(s0.size(),' ');
	reverse_copy(s0.begin(),s0.end(),s2.begin());
	cout<<"s2="<<s2<<endl;
}

void test2(){
	using namespace std;
	
	vector<int> v0{2,0,4,9};
	cout<<"v0:";output(v0);

	vector<int> v1{v0};
	reverse(v1.begin(),v1.end());
	cout<<"v1: ";output(v1);
	
	vector<int> v2{v0};
	reverse_copy(v0.begin(),v0.end(),v2.begin());
	cout<<"v2:";output(v2);
}

void test3(){
	using namespace std;
	
	vector<int> v0{0,1,2,3,4,5,6,7,8,9};
	cout<<"v0: ";output(v0);
	
	vector<int> v1{v0};
	rotate(v1.begin(),v1.begin()+1,v1.end());
	cout<<"v1: ";output(v1);
	
	vector<int> v2{v0};
	rotate(v2.begin(),v2.begin()+2,v2.end());
	cout<<"v2: ";output(v2);
	
	vector<int> v3{v0};
	rotate(v3.begin(),v3.end()-1,v3.end());
	cout<<"v3: ";output(v3);
	
	vector<int> v4{v0};
	rotate(v4.begin(),v4.end()-2,v4.end());
	cout<<"v4: ";output(v4);
	
}

运行结果截图

屏幕截图 2026-10-19 143808