0122-best-time-to-buy-and-sell-stock-ii.java

class Solution {
    public int maxProfit(int[] prices) {
        int profit = 0;
        for (int i=1;i<prices.length;i++) {
            int diff = prices[i] - prices[i-1];
            if (diff > 0) {
                profit+=diff;
            }
        }
        return profit;
    }
}