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Solution: Maximum Swap

Understand how to solve the maximum swap problem by implementing a greedy algorithm that scans digits to find the best swap. Learn to efficiently identify optimal digit swaps to form the largest number with minimal operations and grasp the time and space complexity involved.

Statement

Given an integer num, return the maximum number that can be formed by swapping at most two digits once.

Constraints:

  • 00 \leq num 105\leq 10^5 ...