How to Solve Largest Number After Digit Swaps by Parity Problem
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Largest Number After Digit Swaps by Parity
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...
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Understanding the Largest Number After Digit Swaps by Parity Problem
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Problem Statement
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.
Largest Number After Digit Swaps by Parity
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Examples
num = 12343412Swap 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.
num = 6587587655Swap 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 <= 109How Interview Coder Helps with Leetcode Problems
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