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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3. #include <string.h>
  4. #include <ctype.h>
  5.  
  6. int compare_filename(const char *a, const char *b) {
  7.     int i = 0, j = 0;
  8.  
  9.     while (a[i] != '\0' && b[j] != '\0') {
  10.         // 如果两个字符都是数字，提取完整数字进行比较
  11.         if (isdigit(a[i]) && isdigit(b[j])) {
  12.             // 跳过前导零
  13.             while (a[i] == '0') i++;
  14.             while (b[j] == '0') j++;
  15.  
  16.             // 提取数字值
  17.             long num_a = 0, num_b = 0;
  18.             while (isdigit(a[i])) {
  19.                 num_a = num_a * 10 + (a[i] - '0');
  20.                 i++;
  21.             }
  22.             while (isdigit(b[j])) {
  23.                 num_b = num_b * 10 + (b[j] - '0');
  24.                 j++;
  25.             }
  26.  
  27.             // 比较数字大小
  28.             if (num_a < num_b) return -1;
  29.             if (num_a > num_b) return 1;
  30.         } 
  31.         // 如果两个字符都是字母，忽略大小写比较
  32.         else if (isalpha(a[i]) && isalpha(b[j])) {
  33.             char char_a = tolower(a[i]);
  34.             char char_b = tolower(b[j]);
  35.  
  36.             if (char_a < char_b) return -1;
  37.             if (char_a > char_b) return 1;
  38.  
  39.             i++;
  40.             j++;
  41.         }
  42.         // 其他情况，按 ASCII 值比较
  43.         else {
  44.             if (a[i] < b[j]) return -1;
  45.             if (a[i] > b[j]) return 1;
  46.  
  47.             i++;
  48.             j++;
  49.         }
  50.     }
  51.  
  52.     // 处理一个字符串结束的情况
  53.     if (a[i] == '\0' && b[j] == '\0') return 0;
  54.     if (a[i] == '\0') return -1;
  55.     return 1;
  56. }
  57.  
  58. // 测试函数
  59. int main() {
  60.     // 测试用例1
  61.     printf("测试用例1:\n");
  62.     printf("a = \"grade1-class5-id5-zhangsan\"\n");
  63.     printf("b = \"grade01-class10-id2-list\"\n");
  64.     printf("期望输出: 1\n");
  65.     printf("实际输出: %d\n\n", compare_filename("grade1-class5-id5-zhangsan", "grade01-class10-id2-list"));
  66.  
  67.     // 测试用例2
  68.     printf("测试用例2:\n");
  69.     printf("a = \"grade2-class7-id2-wangwu\"\n");
  70.     printf("b = \"grade2-class7-id15-zhaoliu\"\n");
  71.     printf("期望输出: 1\n");
  72.     printf("实际输出: %d\n\n", compare_filename("grade2-class7-id2-wangwu", "grade2-class7-id15-zhaoliu"));
  73.  
  74.     return 0;
  75. }
  76.  
Success #stdin #stdout 0.01s 5288KB
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stdin
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Standard input is empty
stdout
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测试用例1:
a = "grade1-class5-id5-zhangsan"
b = "grade01-class10-id2-list"
期望输出: 1
实际输出: -1

测试用例2:
a = "grade2-class7-id2-wangwu"
b = "grade2-class7-id15-zhaoliu"
期望输出: 1
实际输出: -1
https://ideone.com/8Jn6I8
language:
C (gcc 8.3)
created:
15 days ago
visibility:
public

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