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Maximum Subarray - Leetcode 53 - Python

 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.

 

Example 1:

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

Example 2:

Input: nums = [1]
Output: 1

Example 3:

Input: nums = [5,4,-1,7,8]
Output: 23

 

Constraints:

  • 1 <= nums.length <= 105
  • -104 <= nums[i] <= 104


class Solution:

    def maxSubArray(self, nums: List[int]) -> int:

        maxsum = nums[0]

        currsum = 0

        

        for i in nums:

            if currsum < 0:

                currsum = 0

            currsum += i

            maxsum = max(maxsum, currsum)

            

        return maxsum

            


Explaination :

        


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