public class Mh01 { public static void main(String[] args) { int sum = 0; for (int j = 1; j <= 20; j++) { sum += sumMrthod(j); } System.out.print("sum=" + sum); }
public static int sumMrthod(int num01) { if (num01 == 1) return 1; return num01 * sumMrthod(num01 - 1); } }
{
public static void main(String[] args)
{
int sum = 0;
for (int j = 1; j <= 20; j++)
{
sum += sumMrthod(j);
}
System.out.print("sum=" + sum);
}
public static int sumMrthod(int num01)
{
if (num01 == 1)
return 1;
return num01 * sumMrthod(num01 - 1);
}
}