I got same problem. I did use high value and It passed all tests. The description has to fix.

Fixed if it was Java, raise another issue otherwise, but stating the language this time.

please, select the higher number when your mean is an exact medium value. Instructions should be corrected.

Hi, @sachinkhatri. Let me check.

What language is this? Is it Java?

evidence?

The more I read it, the less I understand what it wants from me.

That test expects false in both places, the expected and actual answer were flipped, fixed it.

results are OK on IDE

this suggests that you carried out the same test and it had a different result
but I find that it more often means that this wasn't the same test carried out, or the result wasn't measured, and that's why nothing wrong was seen.

suggestion: start printing out information from your function to find out what happened. maybe print out what the input was and use that in your local environment.

The input string is "Hello World".

Should handle Space in string expected:<[He, ll, o[] , Wo, rl, d_]> but was:<[He, ll, o[,] , Wo, rl, d_]>"

"o " is a pair in the expect result, and it isn't in your answer.

Those [] aren't part of the input string, that's JUnit showing you where is the difference between one result and another.