Package g0901_1000.s0937_reorder_data_in_log_files

Class Solution

  • public class Solution
extends Object
    937 - Reorder Data in Log Files.

    Easy

    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:

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

    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”]

    Explanation:

    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”.

    Example 2:

    Input: logs = [“a1 9 2 3 1”,“g1 act car”,“zo4 4 7”,“ab1 off key dog”,“a8 act zoo”]

    Output: [“g1 act car”,“a8 act zoo”,“ab1 off key dog”,“a1 9 2 3 1”,“zo4 4 7”]

    Constraints:

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

    • Constructor Detail

      • Solution

        public Solution()

    • Method Detail

      • reorderLogFiles

        public String[] reorderLogFiles​(String[] logs)