题解 | #简单密码#

好像题解里面都没有用case 'a' ... 'c': 这种语法，写起来直观又简单

#include <iostream>

using namespace std;

int main() {
    string str;
    cin >> str;

    for (int i=0; i<str.size(); i++) {
        switch(str[i]) {
            case 'A' ... 'Y': str[i] += 33; break;
            case 'Z': str[i] = 'a'; break;
            case 'a' ... 'c': str[i] = '2'; break;
            case 'd' ... 'f': str[i] = '3'; break;
            case 'g' ... 'i': str[i] = '4'; break;
            case 'j' ... 'l': str[i] = '5'; break;
            case 'm' ... 'o': str[i] = '6'; break;
            case 'p' ... 's': str[i] = '7'; break;
            case 't' ... 'v': str[i] = '8'; break;
            case 'w' ... 'z': str[i] = '9'; break;
            default: break;
        }
    }
    cout << str << endl;
}