53. Maximum Subarray

Given an integer array nums, find the contiguous subarray (containing at least one number) which has the largest sum and return its sum.

A subarray is a contiguous part of an array.



def maxSubArray(self, nums: List[int]):
    # Initialize our variables using the first element.
    current_subarray = max_subarray = nums[0]
   
    # Start with the 2nd element since we already used the first one.
    for num in nums[1:]:
        # If current_subarray is negative, throw it away. Otherwise, keep adding to it.
        current_subarray = max(num, current_subarray + num)
        max_subarray = max(max_subarray, current_subarray)
   
    return max_subarray

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