HDU ACM 1075 What Are You Talking About(字典树)

http://acm.hdu.edu.cn/showproblem.php?pid=1075

  1 #include <iostream>
  2 #include <string>
  3 using namespace std;
  4 struct Node
  5 {
  6     char str[20];
  7     int flag;
  8     Node *child[26];
  9 };
 10 void NewNode(Node **Q)//注意这里使用了指针的指针
 11 {
 12     (*Q) = (Node *)malloc(sizeof(Node));
 13     int i;
 14     for(i=0;i<26;i++)
 15     {
 16         (*Q)->child[i] = NULL;
 17     }
 18 }
 19 void Insert(Node **T,char str[],char set[])//注意这里使用了指针的指针
 20 {
 21     Node *Q = *T;
 22     int len = strlen(str);
 23     int i;
 24     for(i=0;i<len;i++)
 25     {
 26         if(Q->child[str[i] - 'a'] != NULL)
 27         {
 28             Q = Q->child[str[i] - 'a'];
 29         }
 30         else
 31         {
 32             NewNode(&(Q->child[str[i] - 'a']));
 33             Q = Q->child[str[i] - 'a'];
 34         }
 35     }
 36     Q->flag = 1;
 37     strcpy(Q->str,set);
 38 }
 39 
 40 void Search(Node *Q,char str[])
 41 {
 42     int len = strlen(str);
 43     if(len == 0)
 44     {
 45         return ;
 46     }
 47     int i;
 48     for(i=0;i<len;i++)
 49     {
 50         if(Q->child[str[i] - 'a'] != NULL)
 51         {
 52             Q = Q->child[str[i] - 'a'];
 53         }
 54         else
 55         {
 56             break;
 57         }
 58     }
 59     if(Q->flag == 1 && i == len)
 60     {
 61         cout<<Q->str;
 62     }
 63     else
 64     {
 65         cout<<str;
 66     }
 67 }
 68 int main()
 69 {
 70     char str[3100];
 71     Node *T = NULL;
 72     NewNode(&T);
 73     int flag = 0;
 74     cin>>str;
 75     getchar();
 76     while(1)
 77     {
 78         gets(str);
 79         if( strcmp(str,"END") == 0 )
 80         {
 81             break;
 82         }
 83         else
 84         {
 85             int i,j;
 86             char english[20] = {0};
 87             char mars[20] = {0};
 88             for(i=0;1;i++)
 89             {
 90                 if(str[i] >= 'a' && str[i]<='z')
 91                 {
 92                     english[i] = str[i];
 93                 }
 94                 else
 95                 {
 96                     english[i] = 0;
 97                     break;
 98                 }
 99             }
100             for(i=i+1,j=0;1;i++,j++)
101             {
102                 if(str[i] >= 'a' && str[i]<='z')
103                 {
104                     mars[j] = str[i];
105                 }
106                 else
107                 {
108                     mars[j] = 0;
109                     break;
110                 }
111             }
112             Insert(&T,mars,english);
113         }
114     }
115     cin>>str;
116     getchar();
117     while(1)
118     {
119         gets(str);
120         if( strcmp(str,"END") == 0 )
121         {
122             break;
123         }
124         else
125         {
126             int len = strlen(str);
127             char mid[20] = {0};
128             int i,j;
129             for(i=0,j=0;i<len;i++)
130             {
131                 if(str[i] >= 'a' && str[i]<='z')
132                 {
133                     mid[j] = str[i];
134                     j++;
135                 }
136                 else
137                 {
138                     mid[j] = 0;
139                     j=0;
140                     Search(T,mid);
141                     cout<<str[i];
142                 }
143             }
144             if(mid[0] != 0)
145             {
146                 mid[j] = 0;
147                 Search(T,mid);
148             }
149             cout<<endl;
150         }
151     }
152     return 0;
153 }
154 
155 /*
156 START
157 from fiwo
158 hello difh
159 mars riwosf
160 earth fnnvk
161 like fiiwj
162 END
163 START
164 difh
165 */

 

posted @ 2013-04-07 00:38  zx雄  阅读(291)  评论(0)  编辑  收藏  举报