MATLAB: Matrix comparison with unequal sized matrices

Question

Hi

Let's say I have:

A = [A1, A2, A3, A4, A5]

B= [B1,B2,B4,B4,B5]

N = counter

If I want to:

1. Compare B1 to A2. If B1 is greater than A2, increment N by 1. Else do nothing.
2. Compare B2 to A3. If B2 is greater than A3, increment N by 1. Else do nothing.
3. Compare B3 to A4. If B3 is greater than A4, increment N by 1. Else do nothing.
4. Compare B4 to A5. If B4 is greater than A5, increment N by 1. Else do nothing.
5. and ignore B5 since it has nothing to compare to

Is there a way to define above description in MATLAB…?

Thank you in advance

Answer 1

N = nnz(B(1:end-1)>A(2:end))

Tested:

>> A = randi(9,1,5)
A =
   2   5   7   2   6
>> B = randi(9,1,5)
B =
   3   9   5   5   4
>> N = nnz(B(1:end-1)>A(2:end))
N =  2