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Grokking the Coding Interview Patterns in Go

Solution: Maximum Swap

Explore how to implement a maximum swap solution by swapping at most two digits once using a greedy algorithm. Understand how scanning digits from right to left helps identify the optimal swap, improving your ability to solve optimization problems effectively in coding interviews.

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Statement

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

Constraints:

  • 0≤0 \leq num ≤105\leq 10^5 ...