How can I find elements in sequence in an array?

Asked by ishita agrawal on 23 May 2017

Latest activity Commented on by ishita agrawal on 24 May 2017

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I have an array of numbers. I want to find set of numbers for which difference of two consecutive numbers is 1. For example, I have a sequence [2,3,6,8,9,10,12,14,16,17]. How can I extract position of (2,3), (8,9,10), (16,17)? I also want to save the output in a new array.

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Answer by Azzi Abdelmalek on 23 May 2017

Accepted Answer

v=[2,3,6,8,9,10,12,14,16,17]
id=[10 diff(v) 10]==1
ii1=strfind(id,[0 1])
ii2=strfind(id,[ 1 0])

3 Comments

ishita agrawal on 23 May 2017

It worked. Thanks.

Jan on 23 May 2017

To avoid a collision with the elements on the margins:

id = [false, diff(v)==1, false];

ishita agrawal on 24 May 2017

@Jan Simon Thank you for the suggestion.

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