If you have an input argument v that is a row-vector and another input a, that is a scalar. How do you have a function that moves every element of v that is equal to a to the end of the vector?

For example,

x= move ([1 2 3 4], 2), i want x to equal to [1 3 4 2]

thanks an advance

Answer 1

[Fangjun Jiang]

Even more generic

a=[1 2 3 4 3 2 1]
idx=a==2
b=[a(~idx),a(idx)]

[Stephen23]

I accepted this answer as it obviously solves the problem, and does so in a very neat way.

Answer 2

[Azzi Abdelmalek]

x= [1 2 3 4]   
idx=2
move=@(x,ii)[x(setdiff(1:numel(x),ii))  x(ii)]

If you want to move the second number of x

out=move(x,2)