import java.util.Scanner;
public class Main {
public static void main(String args[]){
String num;
Scanner sc = new Scanner(System.in);
while(sc.hasNext()){
num = sc.next();
int res = 0;
int mid = (num.length()/2);
StringBuilder sb = new StringBuilder();
for(int i=mid-1;i>=0;i--){
sb.append(num.charAt(i));
}
if(num.length()%2==1){
res = Math.abs(Integer.parseInt(num.substring(mid+1))-Integer.parseInt(sb.toString()));
}else{
res = Math.abs(Integer.parseInt(num.substring(mid))-Integer.parseInt(sb.toString()));
}
System.out.println(res);
}
sc.close();
}
}
原文地址:http://blog.csdn.net/guorudi/article/details/42032559