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 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 and Description
Solution()

Method Summary

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

Methods inherited from class java.lang.Object

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

Constructor Detail

Solution

public Solution()

Method Detail

largestTimeFromDigits

public String largestTimeFromDigits(int[] arr)