Find indexes according to a value in array

Hello everybody,

I am trying to find array indexes in which a certain value is found.

For example, I have the next array with 10 elements.

A = [2 4 6 8 10 12 14 16 18 20]

Now, I have a value x = 11.

x = 11

According to x value, I would like to get the indexes 5 and 6 corresponding to the array values 10 and 12, in which 11 is found.

I tried to solve it as next:

find((A>x) & (A<=x))

However, it returns an empty vector.

I hope you can help me.

Thank you very much!

Answer 1

[the cyclist]

Dare I say obviously, A can't obey both the conditions simultaneously. You need to find the indices separately.

[find(A<=x,1,'last') find(A>x,1,'first')]