Search⌘ K
AI Features

Solution: Largest Number After Digit Swaps by Parity

Explore how to use max-heaps to reorder digits of a number by parity constraints to create the largest possible value. This lesson guides you through the process of separating digits by parity into heaps and reconstructing the number to maximize its value. You will understand the algorithm's logic, time complexity, and space usage, gaining practical insight into heap-based sorting and parity handling techniques for coding interviews.

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 ...