实验任务1：
task1.cpp：
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：
实验任务2：
task2.cpp：
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 }
运行结果：
实验任务3：
task3.cpp：
1 #include <iostream>
2 #include <string>
3 #include <algorithm>
4
5 bool is_palindrome(std::string s){
6 std::string s1{s};
7 reverse(s1.begin(),s1.end());
8 if(s==s1){
9 return true;
10 }
11 else{
12 return false;
13 }
14 }
15
16 int main() {
17 using namespace std;
18 string s;
19
20 while(cin >> s) // 多组输入，直到按下Ctrl+Z后结束测试
21 cout << boolalpha << is_palindrome(s) << endl;
22 }
运行结果：
实验任务4：
task4.cpp：
1 #include <iostream>
2 #include <string>
3 #include <algorithm>
4
5 std::string dec2n(int x, int n = 2){
6 std::string t;
7 int q;
8 char p;
9 if(x==0){
10 t.push_back('0');
11 }
12 while(x>0){
13 q=x%n;
14 if(q>=10){
15 switch(q){
16
17 case 10:p='A';break;
18 case 11:p='B';break;
19 case 12:p='C';break;
20 case 13:p='D';break;
21 case 14:p='E';break;
22 case 15:p='F';break;}
23 }
24 else{
25 p='0'+q;
26 }
27 t.push_back(p);
28 x=x/n;
29 }
30 reverse(t.begin(),t.end());
31 return t;
32 }
33
34 int main() {
35 using namespace std;
36
37 int x;
38 while(cin >> x) {
39 cout << "十进制: " << x << endl;
40 cout << "二进制: " << dec2n(x) << endl;
41 cout << "八进制: " << dec2n(x, 8) << endl;
42 cout << "十六进制: " << dec2n(x, 16) << endl << endl;
43 }
44 }
运行结果：
实验任务5：
task5.cpp：
1 #include<iostream>
2 #include<string>
3 #include<algorithm>
4 using namespace std;
5 int main(){
6 cout<<" "<<"a"<<" "<<"b"<<" "<<"c"<<" "<<"d"<<" "<<"e"<<" "<<"f"<<" "<<"g"<<" "<<"h"<<" "<<"i"<<" "<<"j"<<" "<<"k"<<" "<<"l"<<" "<<"m"<<" "<<"n"<<" "<<"o"<<" "<<"p"<<" "<<"q"<<" "<<"r"<<" "<<"s"<<" "<<"t"<<" "<<"u"<<" "<<"v"<<" "<<"w"<<" "<<"x"<<" "<<"y"<<" "<<"z"<<endl;
7 char t[26]={'B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z','A'};
8 int i,j;
9 char k;
10 for(i=1;i<=9;i++){
11 cout<<" "<<i<<" "<<t[0]<<" "<<t[1]<<" "<<t[2]<<" "<<t[3]<<" "<<t[4]<<" "<<t[5]<<" "<<t[6]<<" "<<t[7]<<" "<<t[8]<<" "<<t[9]<<" "<<t[10]<<" "<<t[11]<<" "<<t[12]<<" "<<t[13]<<" "<<t[14]<<" "<<t[15]<<" "<<t[16]<<" "<<t[17]<<" "<<t[18]<<" "<<t[19]<<" "<<t[20]<<" "<<t[21]<<" "<<t[22]<<" "<<t[23]<<" "<<t[24]<<" "<<t[25]<<endl;
12 k=t[0];
13 for(j=0;j<26;j++){
14 t[j]=t[j+1];
15 }
16 t[25]=k;
17 }
18 for(i=10;i<=26;i++){
19 cout<<i<<" "<<t[0]<<" "<<t[1]<<" "<<t[2]<<" "<<t[3]<<" "<<t[4]<<" "<<t[5]<<" "<<t[6]<<" "<<t[7]<<" "<<t[8]<<" "<<t[9]<<" "<<t[10]<<" "<<t[11]<<" "<<t[12]<<" "<<t[13]<<" "<<t[14]<<" "<<t[15]<<" "<<t[16]<<" "<<t[17]<<" "<<t[18]<<" "<<t[19]<<" "<<t[20]<<" "<<t[21]<<" "<<t[22]<<" "<<t[23]<<" "<<t[24]<<" "<<t[25]<<endl;
20 k=t[0];
21 for(j=0;j<26;j++){
22 t[j]=t[j+1];
23 }
24 t[25]=k;
25 }
26 return 0;
27 }
运行结果：
实验任务6：
task6.cpp：
1 #include<iostream>
2 #include<string>
3 #include<stdlib.h>
4 #include<time.h>
5 #include<ctype.h>
6 #include<string.h>
7 #define max 10
8 using namespace std;
9 int main(){
10 int i,j,t,a,b,c,d,r=0;
11 char p;
12 srand((unsigned)time(NULL));
13 for(j=0;j<10;j++){
14 t=rand()%4;
15
16 switch(t){
17 case 0:
18 p='+';
19 a=rand()%max+1;
20 b=rand()%max+1;
21 c=a+b;break;
22 case 1:
23 p='-';
24 a=rand()%max+1;
25 b=rand()%(a-1)+1;
26 c=a-b;break;
27 case 2:
28 p='*';
29 c=rand()%max+1;
30 do{
31 a=rand()%(c-1)+1;
32 }while(c%a!=0);
33 b=c/a;break;
34 case 3:
35 p='/';
36 a=rand()%max+1;
37 do{
38 b=rand()%(a-1)+1;
39 }while(a%b!=0);
40 c=a/b;break;
41 }
42 cout<<a<<p<<b<<"=";
43 cin>>d;
44 if(d==c){
45 r++;
46 }
47 }
48 cout<<"正确率："<<r<<"0.00%";
49 return 0;
50 }
运行结果：
标签：begin,end,cout,C++,v0,v1,实验,include From： https://www.cnblogs.com/zyf-666/p/18454634