实验任务1
1 #include <iostream>
2 #include <string>
3 #include <vector>
4 #include <algorithm>
5
6 using namespace std;
7
8 template<typename T>
9 void output(const T &c);
10
11 void test1();
12 void test2();
13 void test3();
14
15 int main() {
16 cout << "测试1: \n";
17 test1();
18
19 cout << "\n测试2: \n";
20 test2();
21
22 cout << "\n测试3: \n";
23 test3();
24 }
25
26 template <typename T>
27 void output(const T &c) {
28 for(auto &i: c)
29 cout << i << " ";
30 cout << endl;
31 }
32
33 void test1() {
34 string s0{"0123456789"};
35 cout << "s0 = " << s0 << endl;
36
37 string s1{s0};
38 reverse(s1.begin(), s1.end());
39 cout << "s1 = " << s1 << endl;
40
41 string s2{s0};
42 reverse_copy(s0.begin(), s0.end(), s2.begin());
43 cout << "s2 = " << s2 << endl;
44 }
45
46 void test2() {
47 vector<int> v0{2, 0, 4, 9};
48 cout << "v0: ";
49 output(v0);
50
51 vector<int> v1{v0};
52 reverse(v1.begin(), v1.end());
53 cout << "v1: ";
54 output(v1);
55
56 vector<int> v2{v0};
57 reverse_copy(v0.begin(), v0.end(), v2.begin());
58 cout << "v2: ";
59 output(v2);
60 }
61
62 void test3() {
63 vector<int> v0{0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
64 cout << "v0: ";
65 output(v0);
66
67 vector<int> v1{v0};
68 rotate(v1.begin(), v1.begin()+1, v1.end());
69 cout << "v1: ";
70 output(v1);
71
72 vector<int> v2{v0};
73 rotate(v2.begin(), v2.begin()+2, v2.end());
74 cout << "v2: ";
75 output(v2);
76
77 vector<int> v3{v0};
78 rotate(v3.begin(), v3.end()-1, v3.end());
79 cout << "v3: ";
80 output(v3);
81
82 vector<int> v4{v0};
83 rotate(v4.begin(), v4.end()-2, v4.end());
84 cout << "v4: ";
85 output(v4);
86 }
运行结果1
实验任务2
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 template<typename T>
11 void output(const T &c);
12
13 int rand_int_100();
14 void test1();
15 void test2();
16
17 int main() {
18 cout << "测试1: \n";
19 test1();
20
21 cout << "\n测试2: \n";
22 test2();
23 }
24
25 template <typename T>
26 void output(const T &c) {
27 for(auto &i: c)
28 cout << i << " ";
29 cout << endl;
30 }
31
32 int rand_int_100() {
33 return rand() % 101;
34 }
35
36 void test1() {
37 vector<int> v0(10);
38 generate(v0.begin(), v0.end(), rand_int_100);
39 cout << "v0: ";
40 output(v0);
41
42 vector<int> v1{v0};
43 sort(v1.begin(), v1.end());
44 cout << "v1: ";
45 output(v1);
46
47 vector<int> v2{v0};
48 sort(v2.begin()+1, v2.end()-1);
49 cout << "v2: ";
50 output(v2);
51 }
52
53 void test2() {
54 vector<int> v0(10);
55 generate(v0.begin(), v0.end(), rand_int_100);
56 cout << "v0: ";
57 output(v0);
58
59 auto iter1 = min_element(v0.begin(), v0.end());
60 cout << "最小值: " << *iter1 << endl;
61
62 auto iter2 = max_element(v0.begin(), v0.end());
63 cout << "最大值: " << *iter2 << endl;
64
65 auto ans = minmax_element(v0.begin(), v0.end());
66 cout << "最小值: " << *(ans.first) << endl;
67 cout << "最大值: " << *(ans.second) << endl;
68 double avg1 = accumulate(v0.begin(), v0.end(), 0)/v0.size();
69 cout << "均值: " << fixed << setprecision(2) << avg1 << endl;
70
71 cout << endl;
72
73 vector<int> v1{v0};
74 cout << "v0: ";
75 output(v0);
76 sort(v1.begin(), v1.end());
77 double avg2 = accumulate(v1.begin()+1, v1.end()-1, 0)/(v1.size()-2);
78 cout << "去掉最大值、最小值之后，均值: " << avg2 << endl;
79 }
运行结果2
实验任务3
1 #include <iostream>
2 #include <string>
3 #include <algorithm>
4 using namespace std;
5 bool is_palindrome(string s);
6
7 int main() {
8 string s;
9
10 while(cin >> s) // 多组输入，直到按下Ctrl+Z后结束测试
11 cout << boolalpha << is_palindrome(s) << endl;
12 }
13
14 bool is_palindrome(string s)
15 {
16 string s1=s;
17 reverse(s1.begin(),s1.end());
18 if(s==s1)
19 return true;
20 return false;
21 }
运行结果3
实验任务4
1 #include <iostream>
2 #include <string>
3 #include <algorithm>
4 std::string dec2n(int x, int n=2);
5
6 int main() {
7 using namespace std;
8
9 int x;
10 while(cin >> x) {
11 cout << "十进制: " << x << endl;
12 cout << "二进制: " << dec2n(x) << endl;
13 cout << "八进制: " << dec2n(x, 8) << endl;
14 cout << "十六进制: " << dec2n(x, 16) << endl << endl;
15 }
16 }
17
18 // 函数dec2n定义
19 // 待补足
20 // ×××
21 std::string dec2n(int x,int n)
22 {
23 switch(n)
24 {
25 char s[100];
26 case 2:itoa(x,s,2);return s;break;
27 case 8:itoa(x,s,8);return s;break;
28 case 16:itoa(x,s,16);return s;break;
29 }
30 }
运行结果4
实验任务5
1 #include<iostream>
2 #include<vector>
3 #include<string>
4 #include<algorithm>
5 #include<iomanip>
6 using namespace std;
7
8 int main()
9 {
10 cout<<setw(4);
11 string a="abcdefghijklmnopqrstuvwxyz";
12 string b="ABCDEFGHIJKLMNOPQRSTUVWXYZ";
13 for(int i=0;i<26;i++)
14 {
15 cout<<a[i]<<setw(2);
16 }
17 cout<<endl;
18 for(int i=1;i<=26;i++)
19 {
20 cout<<i<<setw(2);
21 for(int j=1;j<=26;j++)
22 {
23 cout<<b[(i+j-1)%26]<<setw(2);
24 }
25 cout<<endl;
26 }
27 return 0;
28 }
实验结果5
实验任务6
1 #include<iostream>
2 #include<cstdlib>
3 #include<string>
4 #include <algorithm>
5 #include <cmath>
6 #include <ctime>
7 #include <iomanip>
8 using namespace std;
9 int main()
10 {
11 srand(time(0));
12 const int Question=10;
13 int Answer=0;
14 int accuracy;
15 for(int i=0;i<Question;i++)
16 {
17 char operators[]={'+','-','*','/'};
18 char op=operators[rand()%4];
19 int num1=rand()%10+1;
20 int num2=rand()%10+1;
21 if(op=='-'){
22 while(num1<=num2)
23 {
24 num1=rand()%10+1;
25 num2=rand()%10+1;
26 }
27 }
28 else if(op=='/')
29 {
30 while(num1%num2!=0)
31 {
32 num1=rand()%10+1;
33 num2=rand()%(num1/2)+1;
34 }
35 }
36 int ans1;
37 switch(op)
38 {
39 case '+':ans1=num1+num2;break;
40 case '-':ans1=num1-num2;break;
41 case '*':ans1=num1*num2;break;
42 case '/':ans1=num1/num2;break;
43 }
44 cout << num1 << " " << op << " " << num2 << " = ";
45 int ans2;
46 cin>>ans2;
47
48 if(ans1==ans2)
49 {
50 accuracy++;
51 }
52
53
54 }
55 cout<<"正确率："<<((double)accuracy/Question)*100<<"%"<<endl;
56
57
58 return 0;
59 }
运行结果6
标签：begin,include,end,cout,int,程序,v0,实验,实验报告 From： https://www.cnblogs.com/CK1NG/p/18453583