[leetcode]Maximum Subarray @ Python

原题地址：https://oj.leetcode.com/problems/maximum-subarray/

题意：

Find the contiguous subarray within an array (containing at least one number) which has the largest sum.

For example, given the array [−2,1,−3,4,−1,2,1,−5,4],
the contiguous subarray [4,−1,2,1] has the largest sum = 6.

click to show more practice.

More practice:

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

解题思路：最大子序列和问题，直接上代码，不是我能想出来的。

代码：

class Solution:
    # @param A, a list of integers
    # @return an integer
    def maxSubArray(self, A):
        ThisSum = 0
        MaxSum = -10000
        
        for i in range( 0, len(A) ):
            if ThisSum < 0:
                ThisSum = 0
            ThisSum = ThisSum + A[ i ]
            MaxSum = max( ThisSum, MaxSum )

        return MaxSum