import java.util.*;
public class Solution {
/**
* 代码中的类名、方法名、参数名已经指定,请勿修改,直接返回方法规定的值即可
* 计算最大收益
* @param prices int整型一维数组 股票每一天的价格
* @return int整型
*/
public int maxProfit (int[] prices) {
// write code here
if (prices == null || prices.length == 0) {
return 0;
}
int currentPrices = prices[0];
int result = 0 ;
for (int i = 1 ; i < prices.length; i++) {
//卖出时比买入价格高
if (currentPrices < prices[i]) {
result += prices[i] - currentPrices;
}
currentPrices = prices[i];
}
return result;
}
}