Organize vector, extract indices

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Fidele Adanvo
Fidele Adanvo 2020-11-27
评论： Stephen23 2020-11-28
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].

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Stephen23
Stephen23 2020-11-27
Ran in:
A = [2,4];
B = [2,70,8,29,98,100];
Out = setdiff(1:numel(B),A)
Out = 1×4
1 3 5 6
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Fidele Adanvo
Fidele Adanvo 2020-11-28
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
Stephen23 2020-11-28
Ran in:
A = [1,4,6,10,33,200];
out = -diff(A)
out = 1×5
-3 -2 -4 -23 -167

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