c++算法题目总结

5分题

001 Hello World（输出语句）

1#include<stdio.h>
2int main(){
3    printf("Hello World!");
4    return 0;
5}

004计算摄氏温度（简单计算）

1#include<stdio.h>
2int main(){
3    int F;
4    scanf("%d",&F);
5    int C = 5 * (F-32) / 9;
6    printf("Celsius = %d",C);
7    return 0;
8}

014 简单题（输出）

1#include<stdio.h>
2int main(){
3    printf("This is a simple problem.");
4    return 0;
5}

012计算指数（用到math)

1#include<stdio.h>
2#include<math.h>
3int main(){
4    int n;
5    // printf("输入一个不超过10的正整数n:");
6    scanf("%d",&n);
7    int result = pow(2,n);
8    printf("2^%d = %d",n,result);
9    return 0;
10}

021重要的事情说三遍(输出）

1#include<iostream>
2using namespace std;
3int main(void){
4    cout << "I'm gonna WIN!" << endl;
5    cout << "I'm gonna WIN!" << endl;
6    cout << "I'm gonna WIN!" << endl;
7    return 0;
8    
9}

024 后天（简单计算）

1#include<iostream>
2using namespace std;
3int main(void){
4    int D;
5    cin >> D;
6    if(D==6)
7        cout << 1 << endl;
8    else if(D==7)
9        cout << 2 << endl;
10    else
11        cout << D+2 << endl;
12    return 0;
13}

026 I Love GPLT（循环输出）

1#include<iostream>
2using namespace std;
3int main(void){
4    string s = "I Love GPLT";
5    for(int i=0;i<s.length();i++)
6        cout << s[i] << endl;
7    return 0;
8}

029 是不是太胖了（简单计算）

1#include<iostream>
2using namespace std;
3int main(void){
4    double weight;
5    double weight2;
6    int height;
7    cin >> height;
8    weight = (height - 100) * 0.9;
9    weight2 = weight *2;
10    printf("%.1f",weight2);
11    return 0;
12    
13}

036 A乘于B（简单计算）

1#include<iostream>
2using namespace std;
3int main(void){
4    int A,B;
5    cin >> A >> B;
6    cout << A*B <<  endl;
7    return 0;
8    
9}

038新世界（输出）

1#include<iostream>
2using namespace std;
3int main(void){
4    cout << "Hello World" << endl;
5    cout << "Hello New World" << endl;
6    return 0;
7}

042 日期格式化（string用法）

1#include<iostream>
2#include<string>
3using namespace std;
4int main(void){
5    string date;
6    cin >>  date;
7    string year = date.substr(6,4);
8    string month = date.substr(0,2);
9    string day = date.substr(3,2);
10    cout << year << "-" << month << "-" << day << endl;
11    return 0;
12}

045 宇宙无敌打招呼（有条件的输出）

1#include<iostream>
2#include<string>
3using namespace std;
4int main(void){
5    string s;
6    cin >> s;
7
8    if(s.length() <= 0  ||  s.length() >7)
9        s="";
10
11    cout << "Hello" <<  " " <<  s << endl;
12    return 0;
13}

051打折（简单计算）

1#include<iostream>
2using namespace std;
3int main(void){
4    int money,zhekou;
5    cin >> money >> zhekou;
6    double money2 = money * zhekou * 0.1;
7    printf("%.2f",money2);
8    return 0;
9}

052 2018我们要赢（输出）

1#include<iostream>
2using namespace std;
3int main(void){
4    cout << 2018 << endl << "wo3 men2 yao4 ying2 !" << endl;
5    return 0;
6}

057 PTA使我精神焕发（输出）

1#include<iostream>
2using namespace std;
3int main(void){
4    cout << "PTA shi3 wo3 jing1 shen2 huan4 fa1 !" << endl;
5    return 0;
6}

060 心理阴影面积（简单计算）

1#include<iostream>
2using namespace std;
3int main(void){
4    int x,y;
5    cin >> x >> y;
6    int area1 = 0.5 * x *y;
7    int area2 = (100-x)*y;
8    int area3 = (100-y)*(100-x)*0.5;
9    int areaheart = 5000 - area1 -area2 - area3;
10    cout << areaheart << endl;
11    return 0;
12}

065 甭废话上代码（简单输出）

1#include<iostream>
2using namespace std;
3int main(void){
4    cout << "Talk is cheap. Show me the code." << endl;
5    return 0;
6}

066 猫是液体（简单计算）

1#include<iostream>
2using namespace std;
3int main(void){
4     int length,width,height;
5    cin >> length >> width >> height;
6    int v = length * width * height;
7    cout << v << endl;
8    return 0;
9}

073 人与神（简答输出）

1#include<iostream>
2using namespace std;
3int main(void){
4    cout << "To iterate is human, to recurse divine." << endl;
5    return 0;
6}

074 两小时学完C语言（简单计算）

1#include<iostream>
2using namespace std;
3int main(void){
4    int N,K,M;
5    cin >> N >> K >> M;
6     int m = N - M * K;
7    cout << m << endl;
8    return 0;
9    
10}

081 今天我要赢（简单输出）

1#include<iostream>
2using namespace std;
3int main(void){
4    cout << "I'm gonna win! Today!" << endl;
5    cout << "2022-04-23" << endl;
6    return 0;
7}

082 种钻石（简单计算）

1#include<iostream>
2using namespace std;
3int main(void){
4    int N,v;
5    cin >> N >> v ;
6    int day = N / v;
7    cout << day << endl;
8    return 0;
9}

089最好的文档（简单输出）

1#include<iostream>
2using namespace std;
3int main(void){
4    cout << "Good code is its own best documentation." << endl;
5    return 0;
6}

090 什么是机器语言（简单输出）

1#include<iostream>
2using namespace std;
3int main(void){
4    int A,B;
5    cin >> A >> B;
6    cout << A+B-16 << endl << A+B-3 << endl << A+B-1 <<endl << A+B << endl;
7    return 0;
8}

097 编程解决一切问题（简单输出）

1#include<iostream>
2using namespace std;
3int main(void){
4    cout << "Problem? The Solution: Programming." << endl;
5    return 0;
6}

098 再进去几个人（简单计算）

1#include<iostream>
2using namespace std;
3int main(void){
4    int A,B;
5    cin >> A >> B;
6    int num = B-A;
7    cout << num << endl;
8    return 0;
9}

105 珍惜生命（简单输出）

1#include<iostream>
2using namespace std;
3int main(void){
4    cout << "Always code as if the guy who ends up maintaining your code will be a violent psychopath who knows where you live." << endl;
5    return 0;
6}

106 偷感好重

1#include<iostream>
2using namespace std;
3int main(void){
4    int zui,right,left;
5    cin >> zui >> right >> left;
6    int sum = zui + right + left;
7    cout << sum << endl;
8    return 0;
9}

10分题

007 念数字

1#include<iostream>
2using namespace std;
3int main(void){
4    string num;
5    cin >> num;
6
7    string pinyin[] = {"ling","yi","er","san","si","wu","liu","qi","ba","jiu"};
8
9    if(num[0] == '-'){
10        cout << "fu" << " ";
11        for(int i=1;i<num.size();i++){
12            int digit = num[i] - '0';// 将字符型数字转换为整数（例如'5'-'0'=5）
13            if(i < num.size() - 1){
14                cout << pinyin[digit] << " ";
15            }else{// 是最后一个字符，不加空格
16                cout << pinyin[digit];
17            }
18        }    
19    }else{
20        for(int i=0;i<num.size();i++){
21            int digit = num[i] - '0';
22            if(i<num.size() -1){
23                cout << pinyin[digit] << " ";
24            }else{
25                cout << pinyin[digit];
26            }
27        }
28    }
29    return 0;
30}

008 求整数段和

1#include<iostream>
2#include<iomanip>
3using namespace std;
4int main(void){
5    int A,B;
6    cin >> A >> B;
7    int sum=0;
8    int count = 0;
9    for(int i=A;i<=B;i++){
10        cout << setw(5) << right <<i;
11        count++;
12        sum+=i;
13
14    if(count % 5 == 0){
15        cout << endl;
16    }
17}
18
19
20    //如果没有到5个数字
21    if( count % 5 !=0){
22        cout << endl;
23    }
24    cout << "Sum = " << sum << endl;
25    return 0;
26}

010 比较大小

1#include<iostream>
2using namespace std;
3int main(void){
4    int a,b,c;
5    cin >> a >> b >> c;
6
7    if(a>b){
8        swap (a,b);
9    }
10
11    if(b>c){
12        swap(b,c);
13    }
14
15    if(a>b){
16        swap(a,b);
17    }
18
19    cout << a << "->" << b << "->" << c << endl;
20    return 0;
21}

013计算阶乘和

1#include<stdio.h>
2int digui (int N){
3    if(N==1){
4        return 1;
5    }else{
6        return digui(N-1) * N;
7    }
8}
9int main(){
10    int N;
11    scanf("%d",&N);
12    int sum = 0;
13    for(int i=1;i<=N;i++){
14        sum += digui(i);
15    }
16    printf("%d",sum);
17    return 0;
18}

018大笨钟

1#include<iostream>
2#include<iomanip>
3using namespace std;
4int main(void){
5    int h;
6    int m;
7    cin >> h >> m;
8    if(h>=0 && h<=12){
9         cout << "Only" << " " << setfill('0') << setw(2) << h << ":" << setw(2) << m << "." << "  Too early to Dang." << endl;
10    }else if(h>=13 && h<=23){
11        int count;
12        if(m==0){
13            count = h-12;
14        }else{
15            count = h-12+1;
16        }
17
18        for(int i=0;i<count;i++){
19            cout  << "Dang";
20        }
21    }else{
22        cout << ".Error" <<endl;
23    }
24        return 0;
25    }
26

022奇偶分家

1#include<iostream>
2using namespace std;
3int main(void){
4    int N;
5    cin >> N;
6    int oucount = 0;
7    int jicount = 0;
8    for(int i=0;i<N;i++){
9        int num;
10        cin >> num;
11        if(num%2==0){
12            oucount++;
13        }else{
14            jicount++;
15    }
16}
17    cout << jicount << " " << oucount << endl;
18    return 0;
19
20}

028 判断素数（公因数）

1#include<iostream>
2using namespace std;
3int main(void){
4    int N;
5    cin >> N;
6    for(int i=0;i<N;i++){
7        int num;
8        cin >> num;
9        if(num==1){
10            cout << "No" << endl;
11            continue;
12        }
13        int count =0;
14    for(int j=2;j<num;j++){
15        if(num % j == 0){
16            count++;
17        }    
18    }
19 
20    if(count ==0){
21        cout << "Yes" << endl;
22    }else{
23        cout << "No" << endl;
24    }
25}
26    return 0;
27}

031 到底是不是太胖了

1#include<iostream>
2#include<cmath>
3using namespace std;
4int main(void){
5    int N;
6    cin >> N;
7    for(int i=0;i<N;i++){
8        int H;
9        cin >> H;
10        double W = (H - 100)*0.9*2;//标准体重
11        int Wzhen;//真实体重
12        cin >> Wzhen;
13        double Wcha = Wzhen - W;
14        double result = abs(Wcha);
15        if(result < W*0.1){
16            cout << "You are wan mei!" << endl;
17        }else if(Wzhen > W){
18            cout << "You are tai pang le!" << endl;
19        }else{
20            cout << "You are tai shou le!" << endl;
21        }
22    }
23    return 0;
24}

037 A除以B

1#include<iostream>
2#include<iomanip>
3using namespace std;
4int main(void){
5    int A,B;
6    cin >> A >> B;
7    if(B==0){
8       cout << A << "/" << B << "=" << "Error" << endl;
9    }else{
10           double shang = (double)A / B;
11           if(B<0){
12               cout << A << "/(" << B << ")=" << fixed << setprecision(2) << shang << endl;
13           }else{
14                  cout << A << "/" << B << "=" << fixed << setprecision(2) << shang << endl;
15           }
16    }
17    return 0;
18}

040 最佳情侣身高差

1#include<iostream>
2#include<iomanip>
3using namespace std;
4int main(void){
5    int N;
6    cin >> N;
7    for(int i=0;i<N;i++){
8        char gender;
9        cin >> gender;
10        double height;
11        cin >> height;
12        double ideaheight;
13        if(gender == 'F'){
14            ideaheight = height *1.09; 
15        }else{
16            ideaheight = height / 1.09;
17        }
18        cout << fixed << setprecision(2) << ideaheight << endl;
19    }
20    return 0;
21}

041 寻找250

1#include<iostream>
2using namespace std;
3int main(void){
4    int num,count =0;
5    while(cin >> num){
6        count++;
7        if(num == 250){
8            cout << count <<endl;
9            return 0;
10        }
11    }
12    return 0;
13}