C++ 代码

#include <iostream>

using std::cout;
using std::cin;
using std::endl;
using std::string;

int main()
{
    string str = "1234567890-=QWERTYUIOP[]ASDFGHJKL;'ZXCVBNM,./";

    string s;
    while(getline(cin,s)){
        for(auto& elem : s){
            if(elem == ' ') continue;
            elem = str[str.find(elem) - 1];
        }
        cout << s << endl;
    }

    return 0;
}