Package g2201_2300.s2231_largest_number_after_digit_swaps_by_parity

Class Solution

java.lang.Object
g2201_2300.s2231_largest_number_after_digit_swaps_by_parity.Solution
public class Solution extends java.lang.Object
2231 - Largest Number After Digit Swaps by Parity.

Easy

You are given a positive integer num. You may swap any two digits of num that have the same parity (i.e. both odd digits or both even digits).

Return the largest possible value of num after any number of swaps.

Example 1:

Input: num = 1234

Output: 3412

Explanation: Swap the digit 3 with the digit 1, this results in the number 3214.

Swap the digit 2 with the digit 4, this results in the number 3412.

Note that there may be other sequences of swaps but it can be shown that 3412 is the largest possible number.

Also note that we may not swap the digit 4 with the digit 1 since they are of different parities.

Example 2:

Input: num = 65875

Output: 87655

Explanation: Swap the digit 8 with the digit 6, this results in the number 85675.

Swap the first digit 5 with the digit 7, this results in the number 87655.

Note that there may be other sequences of swaps but it can be shown that 87655 is the largest possible number.

Constraints:

  • 1 <= num <= 109

  • Constructor Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    largestInteger(int num)
     

    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

    • largestInteger

      public int largestInteger(int num)