class Solution {
public int maxProfit(int[] prices) {
int max=0;
int count=0;
if(prices.length<=1)
return 0;
for(int i=0;i<prices.length-1;i++)
for(int j=i+1;j<prices.length;j++)
if(max<prices[j]-prices[i])
max=prices[j]-prices[i];
if(max!=0)
return max;
else return 0;
}
}
待优化