code: private static String removeLeadingZeros(String generated) {
          StringBuilder builder = new StringBuilder();
          boolean leading = true;
          for (int i = 0; i < generated.length(); i++) {
              if (generated.charAt(i) == '0' && leading) {
                  continue;
              } else {
                  leading = false;
                  builder.append(generated.charAt(i));
              }
          }
          
          if (builder.length() == 0) {
              // very unlikely to happen, ensures that empty string is not returned
              builder.append('0');
          }
          
          return builder.toString();
      }
docs: Removes leading zero numbers if present.
  @param generated
  @return