【PAT】1031. Hello World for U
2017-01-17 22:01
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#include<iostream> #include<cmath> #include <cstdio> #include<algorithm> #include <cstring> using namespace std; char str[82]; int main(){ scanf("%s",str); int n=strlen(str); int ans=0,k=3; int n2; while(k<n){ if(3*k-2>=n && ans<(n+2-k)/2 && (n+2-k)%2==0){ ans=(n+2-k)/2; n2=k; } k++; } for(int i=0;i<ans-1;i++){ cout<<str[i]; for(int i=0;i<n2-2;i++) cout<<" "; cout<<str[n-i-1]<<endl; } for(int i=0;i<n2;i++) cout<<str[i+ans-1]; return 0; }
优化:
#include<iostream>
#include<cmath>
#include <cstdio>
#include<algorithm>
#include <cstring>
using namespace std;
char str[82];
int main(){
gets(str);
int N=strlen(str);
int n1=(N+2)/3,n3=n1,n2=N+2-n1-n3;
for(int i=0;i<n1-1;i++){
printf("%c",str[i]);
for(int j=0;j<n2-2;j++)
printf(" ");
printf("%c",str[N-i-1]);
}
for(int i=0;i<n2;i++){
printf("%c",str[n1+i-1]);
}
return 0;
}
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