list.set(list.indexOf(0), list.get(0));
      list.set(0, 0);
    }
    // Get threshold in the range [0, length], rounding up to ensure that
    // non-zero percent values result in a non-zero threshold (so we always
    // have at least one matching character).
    int threshold = ((percent * length) + 99) / 100;
    StringBuilder builder = new StringBuilder(length);
    for (int n = 0; n < length; n++) {

      list.set(list.indexOf(0), list.get(0));
      list.set(0, 0);
    }
    // Get threshold in the range [0, length], rounding up to ensure that
    // non-zero percent values result in a non-zero threshold (so we always
    // have at least one matching character).
    int threshold = ((percent * length) + 99) / 100;
    StringBuilder builder = new StringBuilder(length);
    for (int n = 0; n < length; n++) {