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#include<iostream> #include<stack> using namespace std; int main() { int n,count=0; cin>>n; while(n!=1){ if(n%2==0)n=n/2; else n=(3*n+1)/2; count++; } cout<<count; system("pause"); return 0; }
#include<iostream> #include<stack> using namespace std; int main() { string str; cin>>str; int sum=0; bool start =true; for(int i=0;i<str.length();i++){ sum+=(str[i]-'0'); } stack<int> sta; while(sum!=0){ sta.push(sum%10); sum=sum/10; } while(!sta.empty()){ if(start)start=false; else cout<<" "; int tmp=sta.top(); sta.pop(); switch(tmp){ case 0:cout<<"ling";break; case 1:cout<<"yi";break; case 2:cout<<"er";break; case 3:cout<<"san";break; case 4:cout<<"si";break; case 5:cout<<"wu";break; case 6:cout<<"liu";break; case 7:cout<<"qi";break; case 8:cout<<"ba";break; case 9:cout<<"jiu";break; } } system("pause"); return 0; }
//左边a的个数*中间=右边 #include<iostream> using namespace std; int main() { int n; cin>>n; while(n--){ string c; cin>>c; int count1=0,count2=0,count3=0,judge=0; bool result=true; for(int i=0;i<c.length();i++){ if(c[i]=='P'||c[i]=='A'||c[i]=='T'){ if(judge==0&&c[i]=='A')count1++; else if(judge==0&&c[i]=='P')judge=1; else if(judge==1&&c[i]=='A')count2++; else if(judge==1&&c[i]=='T')judge=2; else if(judge==2&&c[i]=='A')count3++; else result=false; } else{ result=false; break; } } if(judge!=2||count1*count2!=count3||count2==0)result=false; if(result)cout<<"YES"<<endl; else cout<<"NO"<<endl; } return 0; }
#include<iostream> using namespace std; typedef struct student{ string name; string num; int score; }Student; int main() { int n; cin>>n; struct student stu[n]; for(int i=0;i<n;i++){ cin>>stu[i].name; cin>>stu[i].num; cin>>stu[i].score; } struct student min=stu[0]; struct student max=stu[0]; for(int i=1;i<n;i++){ if(stu[i].score>max.score)max=stu[i]; if(stu[i].score<min.score)min=stu[i]; } cout<<max.name<<" "<<max.num<<endl; cout<<min.name<<" "<<min.num<<endl; return 0; }
#include<iostream> using namespace std; int main() { int n; int num[101]={0}; cin>>n; for(int i=0;i<n;i++){ int tmp; cin>>tmp; num[tmp]=1; } for(int i=0;i<101;i++){ if(num[i]==1){ int temp=i; while(temp>1){ if(temp%2==0)temp/=2; else temp=(3*temp+1)/2; if(temp!=1&&temp<101)num[temp]=0; } } } int flag=1; for(int i=100;i>=0;i--){ if(num[i]==1){ if(flag==0){ cout<<" "<<i; } else{ flag=0; cout<<i; } } } return 0; }
#include<iostream> using namespace std; int main() { int n; cin>>n; int a,b,c; a=n/100; b=n%100/10; c=n%10; while(a!=0){ cout<<"B"; a--; } while(b!=0){ cout<<"S"; b--; } for(int i=0;i<c;i++){ cout<<i+1; } return 0; }
#include<iostream> #include<vector> #include<math.h> using namespace std; int main() { int n,i,j; cin>>n; int count=0; vector<int> prime; for(int i=2;i<=n;i++){ for(j=2;j<=sqrt(i);j++){ if(i%j==0)break; } if(j>sqrt(i)) prime.push_back(i); } for(int i=1;i<prime.size();i++) if(prime[i]-prime[i-1]==2)count++; cout<<count; return 0; }
#include<iostream> using namespace std; //change函数 void change(int a[],int l,int r){ for(int i=l;i<=(l+r)/2;i++){ int tmp=a[i]; a[i]=a[l+r-i]; a[l+r-i]=tmp; } } int main() { int m,n; cin>>m>>n; n%=m;//考虑当需要循环的次数超过了数列总数时的情况!!! int a[m]={0}; for(int i=0;i<m;i++){ cin>>a[i]; } change(a,0,m-1-n); change(a,m-n,m-1); change(a,0,m-1); int count=1; for(int i=0;i<m;i++){ if(count==1){ cout<<a[i]; count=0; } else{ count=0; cout<<" "<<a[i]; } } }
#include<iostream> using namespace std; int main() { string str[80]; int i=0,j; while(cin>>str[i]){//这个会经常使用,要记住啊。 i++; } for(j=i-1;j>=0;j--){ if(j!=i-1)cout<<" "; cout<<str[j]; } return 0; }
#include<iostream> using namespace std; int main() { int a[1000]; int i=0; int m,n; while(cin>>m>>n){ a[i]=m*n; a[i+1]=n-1; if(a[i]==0&&a[i+1]==-1)continue; else i+=2; } for(int j=0;j<i;j++){ if(j!=0){ cout<<" "; } cout<<a[j]; } if(i<1)cout<<"0 0";//注意“零多项式”的指数和系数都是 0,但是表示为0 0. return 0; }
#include<iostream> using namespace std; int main() { int n; cin>>n; int i=0; while(n--){ i++; double a,b,c;//看测试用例,选用double或者float类型 cin>>a>>b>>c; if(a+b>c)cout<<"Case #"<<i<<": true"<<endl; else cout<<"Case #"<<i<<": false"<<endl; } return 0; }
#include<iostream> #include<stdio.h> using namespace std; int main() { int n,i; cin>>n; int a[1001]; int sum1=0,flag=1,sum2=0,count1=0,count2=0,count3=0,max=0; double sum3=0; for(i=0;i<n;i++){ cin>>a[i]; if(a[i]%2==0&&a[i]%5==0){ sum1+=a[i]; } else if(a[i]%5==1){ sum2=sum2+flag*a[i]; flag=flag*(-1); count2++; } else if(a[i]%5==2){ count1++; } else if(a[i]%5==3){ sum3+=a[i]; count3++; } else if(a[i]%5==4){ if(a[i]>max)max=a[i]; } } if(sum1==0)cout<<"N "; else cout<<sum1<<" "; if(count2==0)cout<<"N "; else cout<<sum2<<" "; if(count1==0)cout<<"N "; else cout<<count1<<" "; if(count3==0)cout<<"N "; else printf("%.1lf ",sum3/count3); if(max==0)cout<<"N"; else cout<<max; return 0; }
#include<iostream> #include<cmath> using namespace std; bool isprime(int n){ int i; if(n==2){ return true; } else if(n<=1){ return false; } else{ for(i=2;i<=sqrt(n);i++){//要用平方根,如果用n/2找素数,会显示一个错误,表示代码运算量过大。 if(n%i==0)return false; } if(i>sqrt(n))return true; else return false; } } int main() { int m,n; cin>>m>>n; int a[110000]={0}; int x=1; for(int i=1;i<110000;i++){ if(isprime(i)){ a[x]=i; x++; } } int count=0; for(int i=m;i<=n;i++){ count++; count=count%10; if(count==1)cout<<a[i]; else cout<<" "<<a[i]; if(count==0)cout<<endl; } return 0; }
#include<iostream> #include<string> #include<cstdio> using namespace std; int main() { string s1,s2,s3,s4; cin>>s1>>s2>>s3>>s4; int len1=s1.length()<s1.length()?s1.length():s2.length(); int len2=s3.length()<s4.length()?s3.length():s4.length(); char weekday,hour; int minute,flag=0; for(int i=0;i<len1;i++){ if(s1[i]==s2[i]&&flag==0&&(s1[i]>='A'&&s1[i]<='G')){ weekday=s1[i]; flag=1; switch(weekday){ case 'A':cout<<"MON ";break; case 'B':cout<<"TUE ";break; case 'C':cout<<"WED ";break; case 'D':cout<<"THU ";break; case 'E':cout<<"FRI ";break; case 'F':cout<<"SAT ";break; case 'G':cout<<"SUN ";break; } continue;//必不可少,保证下一步的if语句可以执行。不使用continue的话,可以把两个if语句的执行顺序调换一下。 } if(s1[i]==s2[i]&&flag==1&&((s1[i]>='A' && s1[i]<='N') || (s1[i] >= '0' && s1[i] <= '9'))){ hour=s1[i]; break; } } for(int i=0;i<len2;i++){ if(s3[i]==s4[i]&&isalpha(s3[i])){ minute=i; break; } } if(hour>='0'&&hour<='9'){ cout<<'0'<<hour; }else{ cout<<hour-'A'+10; } printf(":%02d", minute); return 0; }
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