Problem 690. Remove the two elements next to NaN value
The aim is to remove the two elements next to NaN values inside a vector.
For example:
x = [6 10 5 8 9 NaN 23 9 7 3 21 43 NaN 4 6 7 8]
The output y will be:
y = [6 10 5 8 9 7 3 21 43 7 8]
Nan values and the 2 next elements after the NaN (23-9 and 4-6) have been removed.
There will be always NaN values in the input vector followed by at least 2 integers.
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6 Comments
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.
JF & LD, I agree with both of your comments. Furthermore, 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.
not so easy problem. Took a lot of time for thinking!
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Indexing I
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