leetcode_122 best time to buy and sell stock ii

class Solution:
    def maxProfit(self, prices):
        """
        :type prices: List[int]
        :rtype: int
        """
        if not prices:
            return 0
        max_profit = 0

        for i in range(1, len(prices)):
            if prices[i] - prices[i - 1] > 0:
                max_profit += prices[i] - prices[i - 1]

        return max_profit