JAVA经典算法40题(13)

 【程序25】题目：一个5位数，判断它是不是回文数。即12321是回文数，个位与万位相同，十位与千位相同。

import java.util.Scanner;
public class Ex25 {
static int[] a = new int[5];
static int[] b = new int[5];
public static void main(String[] args) {
boolean is =false;
Scanner s = new Scanner(System.in);
long l = s.nextLong();
if (l > 99999 || l < 10000) {
System.out.println("Input error, please input again!");
l = s.nextLong();
}
for (int i = 4; i >= 0; i--) {
a[i] = (int) (l / (long) Math.pow(10, i));
l =(l % ( long) Math.pow(10, i));
}
System.out.println();
for (int i=0,j=0; i<5; i++, j++) {
b[j] = a[i];
}
for(int i=0,j=4; i<5; i++, j--) {
if(a[i] != b[j]) {
is = false; break;
} else {
is = true;
}
}
if(is == false) {
System.out.println("is not a Palindrom!");
} else if(is == true) {
System.out.println("is a Palindrom!");
}
}
}