Organize vector, extract indices

Hello, everything okay?

How can I efficiently do the following are between one by one in vector A?

A=[2 4]

B=[2 70 8 29 98 100]

I need to put in Out the indexes of vector B that are different from the indexes of A.

Out=find(B~=B([A]))

This is the output I need.

Out =[1 3 5 6].

Answer 1

[Stephen23]

A = [2,4];
B = [2,70,8,29,98,100];
Out = setdiff(1:numel(B),A)

Out = 1×4

1 3 5 6

[Fidele Adanvo]

Thank you so much

[Fidele Adanvo]

If I need to calculate the difference between the adjacent elements and know the size of the vector a priori, you will know what to tell me?

Por exemple..

A=[1,4,6,10,33,200];

out=[(A(1)-A(2), A(2)-A(3), A(3)-A(4),...........A(n-1)-A(n)]

Important vector do not follow any rule or sequence.

[Stephen23]

A = [1,4,6,10,33,200];
out = -diff(A)

out = 1×5

-3 -2 -4 -23 -167