买卖股票的最佳时机

package Maxmoney;

public class maxmoney {

public static void main(String[] args) {
int array[]={8,6,5,4,5};
System.out.println(maxmoney(array));

}
public static int maxmoney(int[]prices){
int i,j,k;
int M=0;
for(i=0;i<prices.length-1;i++){
for(k=1;k<prices.length;k++){
j=prices[k]-prices[i];
if(j>0&j>M){
M=j;
}
}
}

return M;
}