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Reorder Data in Log Files


Problem Description

You are given an array of logs. Each log is a space-delimited string of words, where the first word is the identifier.

There are two types of logs:

  • Letter-logs: All words (except the identifier) consist of lowercase English letters.
  • Digit-logs: All words (except the identifier) consist of digits.

Reorder these logs so that:

  • The letter-logs come before all digit-logs.
  • The letter-logs are sorted lexicographically by their contents. If their contents are the same, then sort them lexicographically by their identifiers.
  • The digit-logs maintain their relative ordering.

Return the final order of the logs.


Problem Constraints
1 <= logs.length <= 1000
3 <= logs[i].length <= 1000
All the tokens of logs[i] are separated by a single space.
logs[i] is guaranteed to have an identifier and at least one word after the identifier.


Input Format
The first argument is a string array A where each element is a log.


Output Format
Return the string array A after making the changes.


Example Input
Input 1:

A = ["dig1-8-1-5-1", "let1-art-can", "dig2-3-6", "let2-own-kit-dig", "let3-art-zero"]

Input 2:

A = ["a1-9-2-3-1","g1-act-car","zo4-4-7","ab1-off-key-dog","a8-act-zoo"]



Example Output
Output 1:

["let1-art-can","let3-art-zero","let2-own-kit-dig","dig1-8-1-5-1","dig2-3-6"]

Output 2:

["g1-act-car", "a8-act-zoo", "ab1-off-key-dog", "a1-9-2-3-1", "zo4-4-7"]



Example Explanation
Explanation 1:

The letter-log contents are all different, so their ordering is "art-can", "art-zero", "own-kit-dig".
The digit-logs have a relative order of "dig1-8-1-5-1", "dig2-3-6".

Explanation 2:

The array has been sorted restricted to the conditions given.



NOTE: You only need to implement the given function. Do not read input, instead use the arguments to the function. Do not print the output, instead return values as specified. Still have a question? Checkout Sample Codes for more details.
Start solving Reorder Data in Log Files on Interview Code Editor
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