crypt.java

package exam;
import java.util.Scanner;
import java.util.concurrent.*;
import java.lang.Thread;

class CryptionThread extends Thread {
	public long srcnum;
	CryptionThread(long scrnum)
	{
		srcnum =  scrnum;
	}
	public void run()
	{
		long  nums[] = new long[4];
		int cnt = 0;
		while( srcnum != 0)
		{
			nums[cnt] = srcnum % 10;
			srcnum /= 10 ;
		}
		for (int i = 0;i < 4;i ++)
		{
			nums[i] = (nums[i] + 5) % 10;
		}
		long tmp;
		tmp = nums[1];
		nums[1] = nums[3];
		nums[3] = tmp;
		
		tmp = nums[0];
		nums[0] = nums[2];
		nums[2] = tmp;
		
		long ans = 0;
		for (int i = 0;i < 4;i ++)
			ans = ans * 10 + nums[i];
		System.out.println(ans);
	}
}
public class cryption {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		System.out.println("input a num");
		Scanner cin = new Scanner(System.in);
		long src;
		while (cin.hasNext())
		{
			src = cin.nextLong();
			Thread thread = new CryptionThread(src);
			try {
				thread.join();
				thread.run();
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
		}
	}

}