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Solution: Maximum Swap

Explore how to solve the maximum swap problem by identifying the optimal two-digit swap to maximize a number. Learn a greedy method that scans digits efficiently, and grasp the time and space complexity involved in the solution.

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 ...