Web Reference: In-depth solution and explanation for LeetCode 670. Maximum Swap in Python, Java, C++ and more. Intuitions, example walk through, and complexity analysis. Better than official and forum solutions. You are given an integer num. You can swap two digits at most once to get the maximum valued number. Return the maximum valued number you can get. Example 1: Input: num = 2736 Output: 7236 Explanation: Swap the number 2 and the number 7. Example 2: Input: num = 9973 Output: 9973 Explanation: No swap. Constraints: 0
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