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Median-of-Three: Selecting the pivot as the median of the first, middle, and last elements reduces the chance of encountering the worst-case O(n²) time complexity when the input array is already sorted.
Iterative Quick Sort: This implementation uses an explicit stack to manage the subarray indices, avoiding the overhead of recursive function calls and reducing the risk of stack overflow for large arrays.
Space Complexity: While the space complexity remains O(log n) in the average case (for the stack), it is significantly improved over the recursive approach, especially for large datasets.
These changes will help optimize the Quick Sort algorithm in both time and space complexities.