How to change the positions of elements in a vector?

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federico moro
federico moro 2017-5-15
评论： kowshik Thopalli 2017-5-15
Hi all, I need to find all the components of a vector that are equal to 3 and move them at the end of the vector. Any suggestion? Thanks

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回答（2 个）

Guillaume
Guillaume 2017-5-15
v = [v(v ~= 3), v(v == 3)]; %assuming a row vector. If column vector replace , by ;
kowshik Thopalli
kowshik Thopalli 2017-5-15
Using the find() function you can do this very easily.
[R,c]= find(myVector==3)
This gives you the positions of the elements which are equal to 3. Once you have this you can easily reorder. Hope this helps
  2 个评论
federico moro
federico moro 2017-5-15
Thanks but then how can I move them to end? It is a long vector I can not do this one by one..
kowshik Thopalli
kowshik Thopalli 2017-5-15
The answer by Guillaume works. I would not have done it As elegantly as that answer

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