Find maximum difference between two arrays

I have to arrays of the same size 1x101, how can I find the absolute maximum difference between the arrays?

This is what I tried but it is giving me the incorrect answer:

[m] = max( abs( A(1,101) - B(1,101) ))

[Dyuman Joshi]

Because the code compares a single element i.e. (1,101), not the whole vectors.

Use this -

m = max(abs(A-B.'),[],'all');      

For more information, refer to - Compatible Array Sizes for Basic Operations

Array vs Matrix Operations

bsxfun and Implicit Expansion

Answer 1

[Bruno Luong]

No need to compare all the pairs

A = randn(1,101);
B = randn(1,101);


dmaxBruteForce = max(abs(A-B.'),[],'all')

dmaxBruteForce = 5.1894

dmaxSmart = max(abs([max(B)-min(A), max(A)-min(B)]))

dmaxSmart = 5.1894