题解 | #买卖股票的最好时机(二)#

import java.util.*;


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