MATLAB: To know what number is not available in an array.

Question

I have an array A

A=[ 1 7 3 8 7 2 6];

Then after sorting the array A,

B=sort(A,ascending);
B=[1 2 3 6 7 8];

How can I know which number it doesnt contained? Which is 4 and 5?

Answer 1

A=[ 1 7 3 8 7 2 6]
Missing = find(~ismember(min(A):max(A),A))