华为-字符串加解密

华为-字符串加解密

题目链接

​​#include using namespace std;void Encrypt (string s, string &a){ for (int i = 0; i < s.length(); ++i){ if (s[i] >= 'a' && s[i] < 'z'){ a[i] = s[i] - 31; } else if (s[i] == 'z'){ a[i] = 'A'; } if (s[i] >= 'A' && s[i] < 'Z'){ a[i] = s[i] + 33; } else if (s[i] == 'Z'){ a[i] = 'a'; } if (s[i] >= '0' && s[i] < '9'){ a[i] = s[i] + 1; } else if (s[i] == '9'){ a[i] = '0'; } }}void unEncrypt (string s, string &a){ for (int i = 0; i < s.length(); ++i){ if (s[i] > 'a' && s[i] <= 'z'){ a[i] = s[i] - 33; } else if (s[i] == 'a'){ a[i] = 'Z'; } if (s[i] > 'A' && s[i] <= 'Z'){ a[i] = s[i] + 31; } else if (s[i] == 'A'){ a[i] = 'z'; } if (s[i] > '0' && s[i] <= '9'){ a[i] = s[i] - 1; } else if (s[i] == '0'){ a[i] = '9'; } }}int main(){ string a, b, c, d; while (cin >> a) { cin >> b; c = a; d = b; Encrypt(a, c); unEncrypt(b, d); cout << c << endl << d << endl; } return 0;}

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