题目大意:就是后面字符串映射前面字符串,然后查询输出。直接map,不过也可以考虑字典树解决;
AC代码:
#include<iostream>
#include<map>
#include<cstdio>
#include<string>
using namespace std;
string s, s1, s2;
map<string, string> mp;
int main() {
while(getline(cin, s) && s.length()) {
int flag = 0;
for(int i = 0; s[i]; i++) {
if(s[i] == ' ') {
flag = 1;
} else if(flag == 0) {
s1 += s[i];
} else s2 += s[i];
} //分离字符串
mp[s2] = s1;//后面映射前面
s1.clear();
s2.clear();
}
while(cin >> s) {
if(mp[s] != "")//如果映射不为空
cout << mp[s] << endl;
else
cout << "eh" << endl;
}
}