Duplicate issue below
Allowed characters are uppercase / lowercase latin letters and digits from 0 to 9
Special characters are not uppercase or lowercase latin letters, nor are they digits from 0 to 9. I'd say the description covers them.
Wrong how?
It is not clearly stated in the description, but there are differences between the two katas. In this one for example the inputs can include leading spaces and you should trim them.
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Duplicate issue below
Allowed characters are uppercase / lowercase latin letters and digits from 0 to 9Special characters are not uppercase or lowercase latin letters, nor are they digits from 0 to 9. I'd say the description covers them.
Wrong how?
It is not clearly stated in the description, but there are differences between the two katas. In this one for example the inputs can include leading spaces and you should trim them.