Re order log files

reorder_log_files.py

class Solution:
    def reorderLogFiles(self, logs: List[str]) -> List[str]:
        digits = []
        letters = []
        for log in logs:
            if log.split()[1].isdigit():
                digits.append(log)
            else:
                letters.append(log)
        letters.sort(key=lambda x: x.split()[0])
        letters.sort(key=lambda x: x.split()[1:])
        
        return letters + digits