Time Complexity
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The "Maximum Subarray Sum" problem asks us to find the contiguous subarray within an array of numbers that has the largest sum. For example, given the array [-1, 3, -5, 4, 6], the largest sum would be 11, achieved by taking the subarray [3, -5, 4, 6].
About this solution: The candidate's solution correctly finds the maximum sum of a contiguous subarray. The approach is to keep track of the current sum and update the maximum sum if the current sum is greater than the maximum sum. If the current sum is negative, then the current sum is reset to 0.