digui.java

来自「提供了常用的JAVA技术的示例」· Java 代码 · 共 33 行

package digui;

import javax.swing.UIManager;
import java.awt.*;
import java.io.*;

public class digui {
  static long factorial(int n){
    if(n==1)
      return 1;
    else
      return n*factorial(n-1);
  }
  //Main method
  public static void main(String[] args) throws IOException {
    int n;

    do{
    InputStreamReader ir;
    BufferedReader in;
    ir=new InputStreamReader(System.in);
    in=new BufferedReader(ir);
    System.out.println("输入n(n<10):");
    String s=in.readLine();
    n=Integer.parseInt(s);

    System.out.println(n+"!="+factorial(n));

    }while(n<10);
    System.out.println("输入错误！");

  }
}