字符串编码，解码使用dc -e密文P

DC_encode.java

//decode result with dc command like dc -e0000P
import java.math.BigInteger;
public class DC_encode {
    public static void main(String[] args) {
        String a="";
        String b=args[0]+"\n";
        for(int i=0;i<b.length();i++){
            if(Integer.toBinaryString(b.charAt(i)).length()==8)
                a=a+Integer.toBinaryString(b.charAt(i));
            else{
                for(int n=0;n<8-Integer.toBinaryString(b.charAt(i)).length();n++)//补位
                    a=a+'0';
                a=a+Integer.toBinaryString(b.charAt(i));
            }
        }

        //System.out.println(a);

        BigInteger bigInt = new BigInteger(a,2);
        System.out.println(bigInt);

    }
}