【CCF】路径解析 模拟

 1 #include<iostream>
 2 #include<cstdio>
 3 #include<string>
 4 #include<cstring>
 5 #include<algorithm>
 6 #include<vector>
 7 
 8 using namespace std;
 9 int n;
10 const int maxn=1e3+2;
11 char str[maxn];
12 string rel;
13 void handle(){
14     int len=strlen(str);
15     len--;
16     if(len==0){
17         cout<<rel<<endl;
18         return;
19     }
20     string ans;
21     ans.clear();
22     if(str[0]=='/'){
23         ans="";
24     }else{
25         ans=rel;
26     }
27     int i=0;
28     while(i<len){
29         if(str[i]=='.'&&i+1<len&&str[i+1]=='.'&&((i+2<len&&str[i+2]=='/')||(i+2==len))){
30             int j=ans.length()-1;
31             for(;j>=0;j--){
32                 if(ans[j]=='/'){
33                     break;
34                 }
35             }
36             if(j<0) ans="";
37             else ans=ans.substr(0,j);
38             i+=2;
39         }else if(str[i]=='.'&&((i+1<len&&str[i+1]=='/')||(i+1==len))){
40             i++;
41         }else if(str[i]=='/'){
42             while(++i<len&&str[i]=='/');
43         }else{
44             string tmp="/";
45             tmp+=str[i];
46             while(++i<len&&str[i]!='/'){
47                 tmp+=str[i];
48             }
49             ans+=tmp;
50         }    
51     }
52     if(ans==""){
53         printf("/\n");
54         return;
55     }else{
56         cout<<ans<<endl;
57         return;
58     } 
59 }
60 int main(){
61     cin>>n;
62     getchar();
63     fgets(str,maxn,stdin);
64     rel.clear();
65     for(int i=0;i<strlen(str)-1;i++){
66         rel+=str[i];
67     }
68     while(n--){
69         fgets(str,maxn,stdin);
70         handle();
71     }
72     return 0;
73 }