Problem 690. Remove the two elements next to NaN value

Created byAurelien Queffurust

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LastSolutionsubmitted on Jul 25, 2022

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@bmtran (Bryant Tran)on 16 May 2012

i think the question may be worded incorrectly. there is no adding

Aurelien Queffuruston 16 May 2012

Exact . Thanks for the remark , I replaced the "add" word by "remove"

Justin Fritzon 3 Aug 2017

Problem name “Remove the two elements next to NaN value” is confusing. In a 1d array the first and last element have 1 element next to them while other elements have 2 elements next to them. The name would imply that we are to remove one element preceding and one element following a NaN however in the problem description we are told to remove the two elements following the NaN. I would argue that the element preceding the NaN is more “next to” the NaN than the element two elements away. Name should be changed to “Remove the two elements following a NaN value”.

Li Dingon 20 Oct 2017

The term "next to NaN" would generally be considered as the one right before and the one right after NaN, if existing. Also the problem failed to say that NaN themselves need to be removed.

David Verrellion 12 Jan 2018

摩根富林明和LD,我同意您的意见。菲尔特ermore, it is unfortunate that in the example the first NaN has digit "9" both immediately preceding it and two elements after it, making the procedure to get the result in that neighbourhood ambiguous.

Israt Jahanon 20 Jun 2020

not so easy problem. Took a lot of time for thinking!

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Problem 690. Remove the two elements next to NaN value

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