Loading collection data...
Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
https://docs.codewars.com/training/troubleshooting#print-input
Because
['1','2','3']
is not an array of numbers.In the description there is an example 9 -> 44
In the js tests there is a test 9 -> 44
How is that different? It's exactly the same. Maybe your code is off by one.
Read the description again.
Adjusted some languages to use
[32; 126]
character range. Reset the trainer, and it should work fine.Not quite sure what you are asking, but you can't call .length on a null. Issue in your code.