Package g0901_1000.s0949_largest_time_for_given_digits

Class Solution

java.lang.Object
g0901_1000.s0949_largest_time_for_given_digits.Solution
public class Solution extends java.lang.Object
949 - Largest Time for Given Digits.

Medium

Given an array arr of 4 digits, find the latest 24-hour time that can be made using each digit exactly once.

24-hour times are formatted as "HH:MM", where HH is between 00 and 23, and MM is between 00 and 59. The earliest 24-hour time is 00:00, and the latest is 23:59.

Return the latest 24-hour time in "HH:MM" format. If no valid time can be made, return an empty string.

Example 1:

Input: arr = [1,2,3,4]

Output: “23:41”

Explanation: The valid 24-hour times are “12:34”, “12:43”, “13:24”, “13:42”, “14:23”, “14:32”, “21:34”, “21:43”, “23:14”, and “23:41”. Of these times, “23:41” is the latest.

Example 2:

Input: arr = [5,5,5,5]

Output: ""

Explanation: There are no valid 24-hour times as “55:55” is not valid.

Constraints:

  • arr.length == 4
  • 0 <= arr[i] <= 9

  • Constructor Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    java.lang.String
    largestTimeFromDigits(int[] arr)
     

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • Solution

      public Solution()

  • Method Details

    • largestTimeFromDigits

      public java.lang.String largestTimeFromDigits(int[] arr)