- #include <cstdlib>
- #include <iostream>
- using namespace std;
- char encoder[26] = {'C', 'S', 'P', 0};
- char decoder[26];
- string st;
- int main() {
- int k = 0;
- for (int i = 0; i < 26; ++i)
- if (encoder[i] != 0) ++k;
- for (char x = 'A'; x <= 'Z'; ++x) {
- bool flag = true;
- for (int i = 0; i < 26; ++i)
- if (encoder[i] == x) {
- flag = false;
- break;
- }
- if (flag) {
- encoder[k] = x;
- ++k;
- }
- }
- for (int i = 0; i < 26; ++i)
- decoder[encoder[i] - 'A'] = i + 'A';
- cin >> st;
- for (int i = 0; i < st.length(); ++i)
- st[i] = decoder[st[i] - 'A'];
- cout << st;
- return 0;
- }
4)若输出的字符串为“ABCABCABCA”,则下列说法正确的是( )