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Grokking the Coding Interview Patterns in Python

Solution: Maximum Swap

Explore how to maximize a number by at most one digit swap using a greedy technique. Understand the step-by-step approach to identify digit pairs for swapping, with efficient time and space complexity considerations.

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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 ...