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Solution: Largest Number After Digit Swaps by Parity

Explore how to generate the largest number by swapping digits of the same parity using max-heaps. Understand the algorithm's logic, implementation steps, and its time-space tradeoffs in processing digits dynamically.

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 ...