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){}}