二刷 import java.util.*; public class Solution { /** * * @param prices int整型一维数组 * @return int整型 */ public int maxProfit (int[] prices) { int min = prices[0]; int max = 0; for(int num:prices){ max = Math.max(max,num - min); min = Math.min(min,num); } return max; } } import java.util.*; public class So...