A few days ago, I asked this question after leaving it in the sandbox for a bit. It got closed as "unclear what you're asking", because I didn't notice something that needed clarification in the sandbox. I edited the question to clarify it, and it got reopened.

What confuses me is that it then got closed again, with the same close reason. Why?

  • 1
    \$\begingroup\$ There are unanswered questions with upvotes (by one of the folks who voted to close) in the comments. Have you addressed them? \$\endgroup\$
    – Poke
    Nov 17, 2017 at 14:22
  • \$\begingroup\$ @Poke They were addressed by the edit. \$\endgroup\$
    – RamenChef
    Nov 17, 2017 at 14:31
  • \$\begingroup\$ it is possible to find something wrong in each question, the good one too \$\endgroup\$
    – user58988
    Nov 18, 2017 at 14:14

1 Answer 1


I believe the thing which causes most confusing is that, although the meaning you are using for "p-dimensional sub-array" can be inferred through careful analysis of some particular subsections of your challenge, the way you present it is as though this definition is the natural definition for "p-dimensional sub-array" and you're just adding reminders. To me (and apparently several others), an N-dimensional array is not just an array containing other N-1 dimensional arrays, it is a means of representing N-dimensional organization.

For example, in this challenge a 2-dimensional array with 2 elements in each dimension is this: [[1, 2], [3, 4]] and if you ask for a 1-dimensional sub-array the challenge is "From this array, pick an element" because it's an array containing 1-dimensional arrays. However, when I am told a 2-dimensional array is defined by [[1, 2], [3, 4]] the structure it represents to me is

1 2
3 4

as a single 2-dimensional data structure, not as just some arrays that happen to be indexed. When viewing the 2-dimensional structure, there isn't any intuitive reason [1,2] is a valid 1-dimensional sub-array but [1,3] is not.

It might help if you describe things as "Nested arrays" rather than "N-dimensional arrays" to keep people from expanding the structure, but I think just working through an example in more detail would help explain the flow of logic the most.

  • \$\begingroup\$ Il pelo nell'uovo si trova in qualunque domanda: Translation: Is it possible to find something wrong in each question, the good one too \$\endgroup\$
    – user58988
    Nov 18, 2017 at 14:12

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