package module;

public class Main {
    public static void main(String[] args) {
        //1
        //2
        //3
        int p=2;
        String value = Integer.toBinaryString(p);
        System.err.println(padWithZeros(value));
    }
    public static String padWithZeros(String str) {
        if (str.length()>3){
            return str;
        }
        return String.format("%03d", Integer.parseInt(str));
    }
}