if( c[i] >= '0' && c[i] <= '9' ) return c[i] - '0';
char ch = input.charAt(i); if( ch >= '0' && ch <= '9' ) return ch - '0';
  private int getCompressionLevel( String input )  {    int len = input.length();    char[] c = new char[len];    input.getChars( 0, len, c, 0 );    for( int i = len-1; i >= 0; i-- )    {      if( c[i] >= '0' && c[i] <= '9' )        return c[i] - '0';    }    return Deflater.DEFAULT_COMPRESSION;  }