摘要：
import java.io.*; public class Ketang { public static void main(String args[]) throws Exception { int n; BufferedReader buf = new BufferedReader(new I 阅读全文
摘要：
import java.io.*; public class YangHuiSanJiao { public static int fac(int n){ if(n==0||n==1) return n=1; else return n*fac(n-1); } //递归法求阶乘 public sta 阅读全文