递归相加

public class Test {//1!+2!+3!+4!public static void main(String []args){int count =0;for(int i=1;i<10;i++){count+=function(i);System.out.println(count);}}public static int function(int j){if(j<1){return 0;}else if (j==1) {return 1;}else {return j*function(j-1);}}}