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Solution: Maximum Swap

Explore how to maximize an integer by swapping at most two digits once through a greedy algorithm. This lesson helps you learn to identify optimal swap positions by scanning digits efficiently and implementing the approach in a step-by-step manner, improving your problem-solving skills in coding interviews.

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 ...