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Solution: Maximum Swap

Explore how to apply a greedy algorithm to maximize an integer by swapping two digits at most once. Learn to identify optimal swap positions by scanning digits from right to left, improving number value efficiently. This lesson helps you implement and understand the problem-solving process and analyze its time and space complexity.

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 ...