So short

How we can mention result in getWorth which is mentioned in result declaration
By that,I mean why we can't do like this:
return (worth[index] * value);
And I don't understatnd what is initial value of result by the way?
I have cognitive dissonance >_<

Input validation is annoying.

This is one of those "Guess which parameters are valid" Kata's.
Agree with the warrior who named his validation func 'stupidValidationInEasyKatasMakesMeBored'.

I hate these things. Sorry for that.

• No random tests
• Worthless input validation
• Duplicate of "Multiply" kata

An admirable functional solution. The weakness of this particular implementation is that it exchanges for brevity the clarity afforded by self-documenting code. The significance of each array element is left undisclosed to the poor maintenance developer.

I neither knew. The solution is excellent

Great kata! I think the problem could be worded a little better...

Don't start with an example. Explanation is not very useful.

Classic example of a solution looking for a problem .. :/

Added.

It looks like he added Bool's later as the reference solution allows it.

Fixed.