LeetCode-937 Reorder Data in Log Files Solution (with Java)

1. Description:

Notes:
2. Examples:

3.Solutions:

 1 /**
 2  * Created by sheepcore on 2018-11-11
 3  */
 4 class Solution {
 5     public String[] reorderLogFiles(String[] logs) {
 6         Comparator<String> myComp = new Comparator<String>() {
 7             @Override
 8             public int compare(String s1, String s2) {
 9                 int s1si = s1.indexOf(' ');
10                 int s2si = s2.indexOf(' ');
11                 char s1fc = s1.charAt(s1si+1);
12                 char s2fc = s2.charAt(s2si+1);
13                 
14                 if (s1fc <= '9') {
15                     if (s2fc <= '9') return 0;
16                     else return 1;
17                 }
18                 if (s2fc <= '9') return -1;
19                 
20                 int preCompute = s1.substring(s1si+1).compareTo(s2.substring(s2si+1));
21                 if (preCompute == 0) return s1.substring(0,s1si).compareTo(s2.substring(0,s2si));
22                 return preCompute;
23             }
24         };   
25         Arrays.sort(logs, myComp);
26         return logs;       
27     }
28 }