Daily Coding Problem: Problem #1579 [Medium]

Good morning! Here's your coding interview problem for today.

This problem was asked by Facebook.

Given a circular array, compute its maximum subarray sum in O(n) time. A subarray can be empty, and in this case the sum is 0.

For example, given [8, -1, 3, 4], return 15 as we choose the numbers 3, 4, and 8 where the 8 is obtained from wrapping around.

Given [-4, 5, 1, 0], return 6 as we choose the numbers 5 and 1.

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