酒店客房管理系统(命令行版本)

/*
    A.酒店客房管理系统(命令行版本)
      * 1.search是查询酒店房间状态的命令。
      * 2.in是有客人入住的命令，此时需要提供入住的客户名字和房间号。
      * 3.out是客户退房的命令，此时需要提供退房的房间号。
      * 4.exit是退出命令。
      * 提示：房间状态用一个String类型的二维数组表示即可，里面的元素初始值为" EMPTY".
*/
import java.util.*;
public class HomeWork4_3
{
	public static void main(String[] args)
	{
		Scanner sc = new Scanner (System.in);
		String arr[][] = new String[81][2];
		int room[]= new int[81];
		int m=1;
	    for(int i=0;i<81;i++)
		{
			room[i]=m+(i/9+1)*100;
			m++;
			arr[i][0]=""+room[i];
			arr[i][1]="EMPTY";
			if(m>9)
			  m=1;
		}
		while(true){
		System.out.println("Please input your commond:");
		String com = sc.next();
		if("search".equals(com))
		{
			int n=0;
			System.out.println("————————————欢迎访问 laycher.cn—————————————");
		   for(int i = 0;i<81;i++)
		   {
			  System.out.print(arr[i][0]+"\t");
			  m++;
			  if(m>9)
			  {
				  m=1;
			      System.out.println();
				  for(int j=0;j<9;j++)
			      {
			        System.out.print(arr[n][1]+"\t");
					n++;
			      }
			        System.out.println();
			  }
			}
			System.out.println();
		}
		else if("in".equals(com))
		{
			System.out.println("Please input the customer's name and his room number:\n(For Example:Laycher 202)");
			String cus = sc.next();
			String num = sc.next();
			int i=0;
			while(true)
			{
			if(arr[i][0].equals(num))
			{
				if("EMPTY".equals(arr[i][1]))
				{
                  arr[i][1]=cus;
                  System.out.println("Your command succeed!\n");
				  break;
				}
				else
				{
					System.out.println("This room already have customer!\nPlease try another room.\n");
					break;
				}
			}
			else
			{
				i++;
				if(i>=81)
				{
					System.out.println("No This Room!\n");
					break;
				}
			}
			}
		}
		else if("out".equals(com))
		{
			System.out.println("Please input the customer's  room number:\n(For Example:202)");
			String num = sc.next();
			int i=0;
			while(true){
			if (num.equals(arr[i][0]))
			{
				if("EMPTY".equals(arr[i][1]))
				{
					System.out.println("This room is EMPTY.No Customer!\nPlease Check!\n");
				    break;
				}
				else
				{
				    arr[i][1]="EMPTY";
				    System.out.println("Your command succeed!\n");
				    break;
				}
			}
			else
			{
				i++;
                if(i>=81)
				{
					System.out.println("No This Room!\n");
					break;
				}
			}
			}
		}
		else if("exit".equals(com))
		{
			return;
			System.out.println("————————————欢迎访问 laycher.cn—————————————");
		}
		else
		{
			System.out.println("Input Error!Please input again!\n");
		}
	   }
	}
}