java小程序之判断回文数

来源：互联网发布：加大usb口电流软件编辑：程序博客网时间：2024/04/29 16:48

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

public class panduanwenhunshu {
        public static void main(String args[]){
        String s1;
        int x,i=0,k=0;
        int a = 0;
        int [] str=new int[30];
        String output1="请输入一个数字：";
        String output2="这个数不是回文数！";
        String output3="这个数是回文数！";
        JOptionPane.showMessageDialog(null,output1,"判断回文数：",JOptionPane.INFORMATION_MESSAGE);
        s1=JOptionPane.showInputDialog(null,"请输入回文数：","判断回文数：",javax.swing.JOptionPane.QUESTION_MESSAGE);
        x=Integer.parseInt(s1);
        while(x>0){
          str[k++]=x%10+'0';
          x=x/10;
        }
        for(i=0;i<=k/2;i++){
        if(str[i]!=str[k-i-1])
        {
          a=0;
           break;
           }
           else
           a=1;

        }

        if(a==1)
             JOptionPane.showMessageDialog(null,output3,"判断回文数：",JOptionPane.INFORMATION_MESSAGE);
        else

        JOptionPane.showMessageDialog(null,output2,"判断回文数：",JOptionPane.INFORMATION_MESSAGE);

        }

}