题目:利用递归方法求5!
1 public class _022Recursion5 {
2
3 public static void main(String[] args) {
4 long sum = recursion5(5);
5 System.out.println("1+2!+3!+...+5!的和:" + "\n" + sum);
6 }
7
8 private static long recursion5(int i) {
9 if (i == 1) {
10 return 1;
11 } else {
12 return i * recursion5(i - 1);
13 }
14 }
15
16 }
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