How to get sum of a range

I am trying to get the code below to output the number of elements within v(a vector) that are below 2 and above 4.

sum(sum(v<2 & v>4))

When I define v and run this, it does not work as I would like it to. eg for

   v=[1,3,5];
   sum(sum(v<2 & v>4))

I am expecting an output of 2, since there is 1 element below 2(1), and 1 element above 4(5).

Answer 1

[Paolo]

You want to use the OR operator here and not the AND. Use:

nnz(v<2 | v>4)

[Image Analyst]

To build on that, it's because no one number can be both below 2 AND above 4 at the same time. It can be below, or be above, but not both.

[Paolo]

That really goes without saying, I am sure OP understands that. He is probably confused about the meaning of logical operators.

[Jan]

@Mutia Rahmadini: Please do not attach a new question as comment to ananswer of another question. Post this as a new question including the code and a copy of the error message, to increase your chance to get an answer. Finally, remove this comment. Thanks.