human
I found an interesting problem on https://leetcode.com/problems/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.

Example:

Input: [-2,1,-3,4,-1,2,1,-5,4],
Output: 6
Explanation: [4,-1,2,1] has the largest sum = 6.

Follow up:

If you have figured out the O(n) solution, try coding another solution using the divide and conquer approach, which is more subtle.

I tried it in Python, but could not do it. Can you solve it?

 ... Give me a Python program to find the contiguous subarray (containing at least one number) which has the largest sum and return its sum?
assistant
#Here is Python program to find the contiguous subarray (containing at least one number) which has the largest sum and return its sum.

class Solution:
     def maxSubArray(self, nums):
         """
         :type nums: List[int]
         :rtype: int
         """
         current, the_max = [nums[0]]*2
         for num in nums[1:]:
             current = max(num, current + num)
             the_max = max(current, the_max)
         return the_max