LeetCode: Best Time to Buy and Sell Stock II

少数次修改吧，忘了加最后一个递增曲线了

 1 class Solution {
 2 public:
 3     int maxProfit(vector<int> &prices) {
 4         // Start typing your C/C++ solution below
 5         // DO NOT write int main() function
 6         if (prices.size() <= 1) return 0;
 7         int minprice = prices[0];
 8         int maxprofit = 0;
 9         for (int i = 1; i < prices.size(); i++) {
10             if (prices[i] > prices[i-1]) continue;
11             else {
12                 maxprofit += prices[i-1] - minprice;
13                 minprice = prices[i];
14             }
15         }
16         if (prices[prices.size()-1] >= prices[prices.size()-2])
17             maxprofit += prices[prices.size()-1] - minprice;
18         return maxprofit;
19     }
20 };

java

 1 public class Solution {
 2     public int maxProfit(int[] prices) {
 3         int ans = 0;
 4         if (prices.length < 2) return ans;
 5         for (int i = 1; i < prices.length; i++)
 6         {
 7             ans += Math.max(0, prices[i] - prices[i-1]);
 8         }
 9         return ans;
10     }
11 }