题解 | #牛奶价格预测#

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
     *
     * 
     * @param milkPrices int整型一维数组 
     * @return int整型
     */
    public int maxProfit (int[] milkPrices) {
        // write code here
        int min_value=milkPrices[0];
        int ans=0;
        for(int i=1;i<milkPrices.length;i++){
            if(milkPrices[i]>min_value){
                ans=Math.max(ans,milkPrices[i]-min_value);
            }
            else min_value=milkPrices[i];
        }
        return ans;
    }
}