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Solution: Maximum Swap

Explore how to implement the maximum swap problem solution by swapping at most two digits once using a greedy algorithm. Learn to scan digits efficiently and optimize the number with a single pass. Understand the time and space complexity and apply this pattern to similar optimization problems.

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 ...