题意:给定一个映射表的关系,给定每个单词的对应的映射的单词。现在给定一段字符串,要求如果单词能够翻译就进行翻译,否则原样输出,但是注意所有的\n,\r,空格以及所有的标点符号都是不翻译的。
思路:先对映射表的单词建立字典树,每个单词的尾节点标记这个单词所映射的单词的下标,那么对于给定的字符串,我们只要把所有的单词进行解析去字典树中查找即可。
代码:
#include<cstdio> #include<cstring> #include<iostream> #include<algorithm> using namespace std; const int MAXN = 30010; const int N = 26; struct Node{ int index; Node* child[N]; }; char word[MAXN][10]; Node node[MAXN]; Node* root; int pos; Node* newNode(){ node[pos].index = -1; for(int i = 0 ; i < N ; i++) node[pos].child[i] = NULL; return &node[pos++]; } void insert(int index , char *str){ Node* s = root; int len = strlen(str); for(int i = 0 ; i < len ; i++){ int num = str[i]-'a'; if(s->child[num] == NULL) s->child[num] = newNode(); s = s->child[num]; } s->index = index; } int search(char *str){ Node* s = root; int len = strlen(str); for(int i = 0 ; i < len ; i++){ int num = str[i]-'a'; if(s->child[num] == NULL) return -1; s = s->child[num]; } return s->index; } void solve(char *str){ int len = strlen(str); char tmp[MAXN]; int i = 0; while(i < len){ if(!islower(str[i])){ printf("%c" , str[i]); i++; continue; } memset(tmp , '\0' , sizeof(tmp)); int j = i; int index = 0; while(j < len && islower(str[j])) tmp[index++] = str[j++]; int cnt = search(tmp); if(cnt == -1) printf("%s" , tmp); else printf("%s" , word[cnt]); printf("%c" , str[j]); i = j+1; } puts(""); } int main(){ pos = 0; root = newNode(); char str[MAXN]; int index = 0; scanf("%s" , str); while(scanf("%s" , word[index])){ if(strcmp(word[index] , "END") == 0) break; scanf("%s" , str); insert(index++ , str); } scanf("%s%*c" , str); while(gets(str)){ if(strcmp(str , "END") == 0) break; solve(str); } return 0; }
时间: 2024-11-17 07:57:53