Search⌘ K
AI Features

Solution: Largest Number After Digit Swaps by Parity

Explore how to rearrange digits of a number to form the largest value by swapping only digits of the same parity. Understand using max-heaps to efficiently manage odd and even digits, and implement the solution with optimal time and space complexity.

Statement

You are given a positive integer num. You can swap any two digits of num as long as they share the same parity (both are odd or both are even).

Your task is to return the largest possible value of num after performing any number of such swaps.

Constraints:

  • 11 \leq num 109\leq 10^9

Solution

The algorithm rearranges the digits of a given integer ...