huiwen.java

实现了回文数的查询,显示1到1000的回文数,自己查询数,程序可以做出判断!

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

public class huiwen
{
  public static void main(String []argv)
  {
   boolean flag = true;
   while(flag)
   {
    String firstN = null;
    int Number = 0,temp,size = 0;
    int []a = new int [10];
  
    firstN = JOptionPane.showInputDialog(firstN);
    Number = Integer.parseInt(firstN);
    temp = Number;
   
    while(temp>0)
    {
     a[size] = temp%10;
     temp/=10;
     size++;
    }   
    if(size!=5)  
      JOptionPane.showMessageDialog(null,"请输入5位整数","Warning",JOptionPane.WARNING_MESSAGE);
    else if (a[0]==a[4]&&a[1]==a[3]) 
			{
			 JOptionPane.showMessageDialog(null,"此数是回文数","Information",JOptionPane.INFORMATION_MESSAGE);
             flag = false;
            }
         else
            {
             JOptionPane.showMessageDialog(null,"此数不是回文数","Information",JOptionPane.INFORMATION_MESSAGE);
             flag = false;
            }
   }
  
  }


}