Omg, whitespace at the end...... Thanks men :D

Well, in your case they are indeed different.

Well, kata is right :D

                                                                      # v trailing space in your answer
'20 8 5 19 21 14 19 5 20 19 5 20 19 1 20 20 23 5 12 22 5 15 3 12 15 3 11 ' should equal 
'20 8 5 19 21 14 19 5 20 19 5 20 19 1 20 20 23 5 12 22 5 15 3 12 15 3 11'
                                                                      

I got the same errors tells that assert is diffrent than result but it isnt :D

Awesome. I get you. I couldn't think of a way of adding arguments to an array. Can I say [...a,b] or [a,b]?

• thing is: the arguments are already available (a and b) so why are you using it? (the arguments thing, I mean)
• keep things simple. You don't need that arr thing, just a number that you'll update, then return in the end.

• why do you use arguments? Don't use that... It's old fashion and the best way to do bad things.
• replace isn't a method of Array.prototype => ???
• actually, you're applying replace to the output of push, which is a number... (see MDN documentation) => ???!??

If you changed all your print(suma) for return suma you should see here the results instead of Nonein the CW trainer. If you're testing your code in another place, you'll have to print the returned value to see it, like this: print(get_sum(0,1)). There is a problem with your code, check how you define liczby in one case and in another, you missed something in one of them.

I'm new at coding and i really appreciate your help but now i'm also stuck casue I changed every print to "return suma " but now it doesnt give back any result. I know that it stores this value somewhere but how i can call it and make it to appear to the screen as a result of this function (without print)?

Please read this. Your function should return the result, not print it.