Please when pasting code, use proper markdown and also mark your post as having spoiler content (I did for you this time). The keys of an object are strings, so you should convert them before pushing to your array to have an array of numbers.
This comment is hidden because it contains spoiler information about the solution
That's not an issue, you're returning an array/list of strings instead of one of numbers. The problem is in your code.
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Please when pasting code, use proper markdown and also mark your post as having spoiler content (I did for you this time).
The keys of an object are strings, so you should convert them before pushing to your array to have an array of numbers.
This comment is hidden because it contains spoiler information about the solution
That's not an issue, you're returning an array/list of strings instead of one of numbers. The problem is in your code.
This comment is hidden because it contains spoiler information about the solution