实验任务一
源代码:
1 #include <iostream> 2 #include <string> 3 #include <vector> 4 #include <algorithm> 5 6 using namespace std; 7 8 // 声明 9 // 模板函数声明 10 template<typename T> 11 void output(const T &c); 12 13 // 普通函数声明 14 void test1(); 15 void test2(); 16 void test3(); 17 18 int main() { 19 cout << "测试1: \n"; 20 test1(); 21 22 cout << "\n测试2: \n"; 23 test2(); 24 25 cout << "\n测试3: \n"; 26 test3(); 27 } 28 29 // 函数实现 30 // 输出容器对象c中的元素 31 template <typename T> 32 void output(const T &c) { 33 for(auto &i: c) 34 cout << i << " "; 35 cout << endl; 36 } 37 38 // 测试1 39 // 组合使用算法库、迭代器、string反转字符串 40 void test1() { 41 string s0{"0123456789"}; 42 cout << "s0 = " << s0 << endl; 43 44 string s1{s0}; 45 reverse(s1.begin(), s1.end()); // 反转指定迭代器区间的元素 46 cout << "s1 = " << s1 << endl; 47 48 string s2{s0}; 49 reverse_copy(s0.begin(), s0.end(), s2.begin()); // 将指定迭代区间的元素拷贝到指定迭代器开始的目标区间,并且在复制过程中反转次序 50 cout << "s2 = " << s2 << endl; 51 } 52 53 // 测试2 54 // 组合使用算法库、迭代器、vector反转动态数组对象vector内数据 55 void test2() { 56 vector<int> v0{2, 0, 4, 9}; 57 cout << "v0: "; 58 output(v0); 59 60 vector<int> v1{v0}; 61 reverse(v1.begin(), v1.end()); 62 cout << "v1: "; 63 output(v1); 64 65 vector<int> v2{v0}; 66 reverse_copy(v0.begin(), v0.end(), v2.begin()); 67 cout << "v2: "; 68 output(v2); 69 } 70 71 // 测试3 72 // 组合使用算法库、迭代器、vector实现元素旋转移位 73 void test3() { 74 vector<int> v0{0, 1, 2, 3, 4, 5, 6, 7, 8, 9}; 75 cout << "v0: "; 76 output(v0); 77 78 vector<int> v1{v0}; 79 rotate(v1.begin(), v1.begin()+1, v1.end()); // 旋转指定迭代器区间[v1.begin(), v1.end())之间的数据项,旋转后从迭代器v1.begin()+1位置的数据项开始 80 cout << "v1: "; 81 output(v1); 82 83 vector<int> v2{v0}; 84 rotate(v2.begin(), v2.begin()+2, v2.end()); 85 cout << "v2: "; 86 output(v2); 87 88 vector<int> v3{v0}; 89 rotate(v3.begin(), v3.end()-1, v3.end()); 90 cout << "v3: "; 91 output(v3); 92 93 vector<int> v4{v0}; 94 rotate(v4.begin(), v4.end()-2, v4.end()); 95 cout << "v4: "; 96 output(v4); 97 }View Code
运行结果截图:
实验任务二
源代码:
1 #include <iostream> 2 #include <vector> 3 #include <string> 4 #include <algorithm> 5 #include <numeric> 6 #include <iomanip> 7 8 using namespace std; 9 10 // 函数声明 11 // 模板函数声明 12 template<typename T> 13 void output(const T &c); 14 15 // 普通函数声明 16 int rand_int_100(); 17 void test1(); 18 void test2(); 19 20 int main() { 21 cout << "测试1: \n"; 22 test1(); 23 24 cout << "\n测试2: \n"; 25 test2(); 26 } 27 28 // 函数实现 29 // 输出容器对象c中的元素 30 template <typename T> 31 void output(const T &c) { 32 for(auto &i: c) 33 cout << i << " "; 34 cout << endl; 35 } 36 37 // 返回[0, 100]区间内的一个随机整数 38 int rand_int_100() { 39 return rand() % 101; 40 } 41 42 // 测试1 43 // 对容器类对象指定迭代器区间进行赋值、排序 44 void test1() { 45 vector<int> v0(10); // 创建一个动态数组对象v0, 对象大小为10 46 generate(v0.begin(), v0.end(), rand_int_100); // 产生[0, 100]之间的随机整数赋值给指定迭代器区间[v0.begin(), v0.end())内的每个数据项 47 cout << "v0: "; 48 output(v0); 49 50 vector<int> v1{v0}; 51 sort(v1.begin(), v1.end()); // 对指定迭代器区间[v1.begin(), v1.end())内数据项进行升序排序 52 cout << "v1: "; 53 output(v1); 54 55 vector<int> v2{v0}; 56 sort(v2.begin()+1, v2.end()-1); // 对指定迭代器区间[v1.begin()+1, v1.end()-1)内数据项进行升序排序 57 cout << "v2: "; 58 output(v2); 59 } 60 61 // 测试2 62 // 对容器类对象指定迭代器区间进行赋值、计算最大值/最小值/均值 63 void test2() { 64 vector<int> v0(10); 65 generate(v0.begin(), v0.end(), rand_int_100); 66 cout << "v0: "; 67 output(v0); 68 69 auto iter1 = min_element(v0.begin(), v0.end()); 70 cout << "最小值: " << *iter1 << endl; 71 72 auto iter2 = max_element(v0.begin(), v0.end()); 73 cout << "最大值: " << *iter2 << endl; 74 75 auto ans = minmax_element(v0.begin(), v0.end()); 76 cout << "最小值: " << *(ans.first) << endl; 77 cout << "最大值: " << *(ans.second) << endl; 78 double avg1 = accumulate(v0.begin(), v0.end(), 0)/v0.size(); 79 cout << "均值: " << fixed << setprecision(2) << avg1 << endl; 80 81 cout << endl; 82 83 vector<int> v1{v0}; 84 cout << "v0: "; 85 output(v0); 86 sort(v1.begin(), v1.end()); 87 double avg2 = accumulate(v1.begin()+1, v1.end()-1, 0)/(v1.size()-2); 88 cout << "去掉最大值、最小值之后,均值: " << avg2 << endl; 89 }View Code
运行结果截图:
实验任务三:
源代码:
1 #include <iostream> 2 #include <string> 3 #include <algorithm> 4 5 bool is_palindrome(std::string s); 6 7 int main() { 8 using namespace std; 9 string s; 10 11 while(cin >> s) // 多组输入,直到按下Ctrl+Z后结束测试 12 cout << boolalpha << is_palindrome(s) << endl; 13 } 14 15 // 函数is_palindrom定义 16 bool is_palindrome(std::string s){ 17 std::string s1=s; 18 reverse(s1.begin() ,s1.end() ); 19 if(s1==s) 20 return true; 21 else 22 return false; 23 }View Code
运行结果截图
实验任务四
源代码:
1 #include <iostream> 2 #include <string> 3 #include <algorithm> 4 5 std::string dec2n(int x, int n = 2); 6 7 int main() { 8 using namespace std; 9 10 int x; 11 while(cin >> x) { 12 cout << "十进制: " << x << endl; 13 cout << "二进制: " << dec2n(x) << endl; 14 cout << "八进制: " << dec2n(x, 8) << endl; 15 cout << "十六进制: " << dec2n(x, 16) << endl << endl; 16 } 17 } 18 19 // 函数dec2n定义 20 std::string dec2n(int x, int n){ 21 std::string s=""; 22 int r; 23 std::string s1{"0123456789ABCDFG"}; 24 if(n==2||n==8){ 25 do{ 26 r=x%n; 27 x/=n; 28 char y=r+'0'; 29 s=s+y; 30 }while(x); 31 reverse(s.begin() ,s.end() ); 32 return s; 33 } 34 else{ 35 36 do{ 37 r=x%n; 38 x/=n; 39 char y=*(s1.begin()+r); 40 s+=y; 41 }while(x); 42 reverse(s.begin() ,s.end() ); 43 return s; 44 } 45 46 }View Code
运行结果截图:
实验任务五
源代码
1 #include <iostream> 2 #include <string> 3 #include <iomanip> 4 #include <numeric> 5 #include <time.h> 6 using namespace std; 7 8 int rand_int(){ 9 srand(time(NULL)); 10 return rand()%10+1; 11 } 12 13 char rand_char(){ 14 string s{"+-*/"}; 15 int t; 16 t=rand()%4; 17 return *(s.begin()+t); 18 } 19 20 void output(int x,char z,int y){ 21 cout<<x<<" "<<z<<" "<<y<<" = "; 22 } 23 int main() { 24 int x,y,s,a,n,r; 25 double truel=0.0; 26 char z; 27 for(int i=0;i<10;i++){ 28 x=rand_int(); 29 y=rand_int(); 30 z=rand_char(); 31 if(z=='+'){ 32 s=x+y; 33 output(x,z,y); 34 cin>>a; 35 if(a==s) 36 truel++; 37 } 38 else if(z=='-'){ 39 while(x<=y){ 40 x=rand_int(); 41 } 42 s=x-y; 43 output(x,z,y); 44 cin>>a; 45 if(a==s) 46 truel++; 47 } 48 else if(z=='*'){ 49 s=x*y; 50 output(x,z,y); 51 cin>>a; 52 if(a==s) 53 truel++; 54 } 55 else if(z=='/'){ 56 while(1){ 57 s=x/y; 58 r=y*s; 59 if(x==r) 60 break; 61 x=rand_int(); 62 } 63 64 output(x,z,y); 65 cin>>a; 66 if(a==s) 67 truel++; 68 } 69 } 70 71 cout<<"正确率:"<<fixed<<setprecision(2)<<truel*10<<"%"; 72 73 }View Code
运行结果截图
标签:begin,cout,int,c++,v0,v1,实验,include From: https://www.cnblogs.com/hxqbbimoshuchou666/p/18459567