题解 | 小红的字符串

#include <stdio.h>
#include <string.h>

int main() {
    char s[1001];
    int a = 0;
    scanf("%s", s);
    int len = strlen(s);
    for (int i = 0; i < len / 2; i++) {
        int count = 0;
        while (s[i] != s[len-1-i]) {
            if((s[i] < s[len-1-i] && s[len-1-i] - s[i] <= 13) || (s[i] > s[len-1-i] && s[i] - s[len-1-i] > 13)){
                if (s[i] != 'z') {
                    s[i] = s[i] + 1;
                }else if (s[i] == 'z') {
                    s[i] = 'a';
                }
                count++;
            }else if ((s[i] > s[len-1-i] && s[i] - s[len-1-i] <= 13) || (s[i] < s[len-1-i] && s[len-1-i] - s[i] > 13)) {
                if (s[len-1-i] != 'z') {
                    s[len-1-i] = s[len-1-i] + 1;
                }else if (s[len-1-i] == 'z') {
                    s[len-1-i] = 'a';
                }
                count++;
            }
        }
        a = a + count;
    }
    printf("%d", a);
    return 0;
}