题解 | 牛牛的考试

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

int main() {
    int T;
    // 输入题目数 T
    scanf("%d", &T);
    getchar(); // 吸收换行符
    while(T--)
    {
        char options[4][605];
        int lengths[4];//储存字符长度
        for (int i = 0; i < 4; i++)
         {
            fgets(options[i], 605, stdin);
            lengths[i] = strlen(options[i]);
        }
        int min_count = 0, max_count = 0;
        int min_len = lengths[0], max_len = lengths[0];
        // 统计最小长度和最大长度的出现次数
        for (int i = 0; i < 4; i++) {
            if (lengths[i] < min_len) 
            {
                min_len = lengths[i];
                min_count = 1;
            }
             else if (lengths[i] == min_len)
              {
                min_count++;
              }
            if (lengths[i] > max_len) 
            {
                max_len = lengths[i];
                max_count = 1;
            } 
            else if (lengths[i] == max_len) {
                max_count++;
            }
        }

        // 判断属于哪种情况并输出结果
        if (min_count == 1 && max_count != 1) 
        {
            // 三长一短，选最短
            for (int i = 0; i < 4; i++)
             {
                if (lengths[i] == min_len)
                 {
                    printf("%c\n", 'A' + i);
                    break;
                }
            }
        }
         else if (max_count == 1 && min_count != 1)
          {
            // 三短一长，选最长
            for (int i = 0; i < 4; i++) {
                if (lengths[i] == max_len) {
                    printf("%c\n", 'A' + i);
                    break;
                }
            }
        } 
        else
         {
            // 参差不齐，选 C
            printf("C\n");
        }
    }
    return 0;
}