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Grokking the Coding Interview Patterns in Go

Solution: Maximum Swap

Explore how to apply greedy algorithms to solve the Maximum Swap problem by identifying optimal digit swaps in a single pass. Understand the process of scanning digits, tracking indices, and swapping to form the largest possible number efficiently while analyzing time and space complexity.

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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 ...