LDM_007的博客

import java.util.Scanner; public class GuessingChar { //主方法 public static void main(String[] args) { Scanner scan=new Scanner(System.in); char[] chs=generate();//获取随机字符数组 int count=0;//记录猜错的次数 while(t...

package day03; import java.util.Scanner; public class GuessNumber { public static void main(String[] args) { int number,number1; boolean flag=true; number1=(int) (Math.random()*100); System.out.printl...

方法一： int sum=0; int t=9; for(int i=1;i<=10;i++){ t=t*10+9; sum+=t; } 方法二： String s = "9" ; long sum=9; for(int i=1;i<=9;i++){ s+="9&

package dayo4; import java.util.Scanner; public class SwitchDemo{ public static void main(String [] args){ } }