No, that's not the problem. The problem is that you're mutating the input, and that skews the tests. I'll raise this as a new issue.
This comment is hidden because it contains spoiler information about the solution
There must be a problem in you code. You can post it below inside three backticks and make sure to mark as a spoiler.
you're not missing anything - the correct answer is 'bl' which I tested in python. Are you sure that you are returning the right thing? Which language are you using?
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No, that's not the problem. The problem is that you're mutating the input, and that skews the tests. I'll raise this as a new issue.
This comment is hidden because it contains spoiler information about the solution
There must be a problem in you code. You can post it below inside three backticks and make sure to mark as a spoiler.
you're not missing anything - the correct answer is 'bl' which I tested in python.
Are you sure that you are returning the right thing?
Which language are you using?