[LC] 937. Reorder Data in Log Files

You have an array of logs.  Each log is a space delimited string of words.

For each log, the first word in each log is an alphanumeric identifier.  Then, either:

• Each word after the identifier will consist only of lowercase letters, or;
• Each word after the identifier will consist only of digits.

We will call these two varieties of logs letter-logs and digit-logs.  It is guaranteed that each log has at least one word after its identifier.

Reorder the logs so that all of the letter-logs come before any digit-log.  The letter-logs are ordered lexicographically ignoring identifier, with the identifier used in case of ties.  The digit-logs should be put in their original order.

Return the final order of the logs.

Example 1:

Input: logs = ["dig1 8 1 5 1","let1 art can","dig2 3 6","let2 own kit dig","let3 art zero"]
Output: ["let1 art can","let3 art zero","let2 own kit dig","dig1 8 1 5 1","dig2 3 6"]

class Solution {
    public String[] reorderLogFiles(String[] logs) {
        Arrays.sort(logs, new Comparator<String>() {
            @Override
            public int compare(String str1, String str2) {
                String[] strArr1 = str1.split(" ", 2);
                String[] strArr2 = str2.split(" ", 2);
                boolean isOneDigit = Character.isDigit(strArr1[1].charAt(0));
                boolean isTwoDigit = Character.isDigit(strArr2[1].charAt(0));
                if (!isOneDigit && !isTwoDigit) {
                    int comNum = strArr1[1].compareTo(strArr2[1]);
                    // ["a1 9 2 3 1","g1 act car","zo4 4 7","ab1 off key dog","a8 act zoo","a2 act car"]
                    if (comNum == 0) {
                        return strArr1[0].compareTo(strArr2[0]);
                    }
                    return comNum;
                } else if (isOneDigit && !isTwoDigit) {
                    return 1;
                } else if (!isOneDigit && isTwoDigit) {
                    return -1;
                } 
                    return 0;
            }
        });
        return logs;
    }
}