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 identifiers, 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.


The input consists of an argument:

logs: a list of strings representing the logs name


Return list of the final order of the logs.


0 <= logs.length <= 100

3 <= logs[i].length <= 100

logs[i] is guaranteed to have an identifier, and a word after the identifier


Example 1:


keywords = ["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"]

Try it yourself