yung wrote:
public class Test {
  public static String zeros = "0000000000000000";
  public static String int2str (int in){
    String ins = Integer.toString(in);
    int len = ins.length();
    if(len >= 4)
    return ins;
    else
    return zeros.substring(4-len) + ins;
  }
  
  public static void main(String[] args) {
    for(int i=0; i<9999; i=i*2){
      System.out.println(int2str(12));
    }
  }
    
}