Finding the number of values bigger than a certain number in an array?

Suppose I have an array of 50 numbers, how would I find the number of elements bigger than say 21 in an array of random numbers? Conversely, for less than as well.

Answer 1

[Tom]

x=50*rand(7);
a= x > 21;
numel(a(a>0))

[Jan]

Or: sum(a(:) > 0)

[Image Analyst]

Or

numberBigger = sum(x(:)>21);
numberSmaller = sum(x(:)<=21);