comefrom: <awangdev>Fraction to Recurring Decimal_1.java
code: public String fractionToDecimal(int numerator, int denominator) {
          long nume = Math.abs((long)numerator);
          long deno = Math.abs((long)denominator);
          String sign = (numerator < 0) ^ (denominator < 0) ? "-" : "";
          if (deno == 0) {
          	return "";
          } else if (nume == 0) {
          	return "0";
          } else if (nume % deno == 0) {
          	return sign + nume/deno + "";
          }
          
          HashMap<Long,Integer> map = new HashMap<Long, Integer>();
          StringBuffer rst = new StringBuffer(sign + nume/deno + ".");
          long end = nume%deno * 10;
    		int i = 0;
          while (end != 0){
  			if (map.containsKey(end)) {
  				rst.insert(rst.indexOf(".") + map.get(end) + 1, "(");
  				rst.append(")");
  				return rst.toString();
  			}
  			rst.append(end/deno);
          	map.put(end, i++);
          	end = (end % deno) * 10;
          }
          return rst.toString();
      }
masked: public String var_0 ( int var_1 , int var_2 ) {
    long var_5 = Math . abs ( ( long ) var_1 ) ;
    long var_6 = Math . abs ( ( long ) var_2 ) ;
    String var_11 = ( var_1 < 0 ) ^ ( var_2 < 0 ) ? "-" : "" ;
    if ( var_6 == 0 ) {
      return "" ;
    }
    else if ( var_5 == 0 ) {
      return "0" ;
    }
    else if ( var_5 % var_6 == 0 ) {
      return var_11 + var_5 / var_6 + "" ;
    }
    HashMap < Long , Integer > var_16 = new HashMap < Long , Integer > ( ) ;
    StringBuffer var_19 = new StringBuffer ( var_11 + var_5 / var_6 + "." ) ;
    long var_21 = var_5 % var_6 * 10 ;
    int var_22 = 0 ;
    while ( var_21 != 0 ) {
      if ( var_16 . containsKey ( var_21 ) ) {
        var_19 . insert ( var_19 . indexOf ( "." ) + var_16 . get ( var_21 ) + 1 , "(" ) ;
        var_19 . append ( ")" ) ;
        return var_19 . toString ( ) ;
      }
      var_19 . append ( var_21 / var_6 ) ;
      var_16 . put ( var_21 , var_22 ++ ) ;
      var_21 = ( var_21 % var_6 ) * 10 ;
    }
    return var_19 . toString ( ) ;
  }
  