Sum per 2 elements in vector

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Ann-Lara Aernoudts
Ann-Lara Aernoudts 2021-1-25
回答： Abdel 2023-9-18
Hello,
I am trying to sum my vector by 2 elements.
An example:
I have:
A= [1;2;3;4;5;6]
What I want:
A_new = [3;7;11]
Is there any way to easily code this?
I know one way via a for-loop but I was wondering if there was a more efficient way.
Thanks in advance!

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采纳的回答

Stephen23
Stephen23 2021-1-25
编辑：Stephen23 2021-1-25
Ran in:
A = [1;2;3;4;5;6];
B = A(1:2:end) + A(2:2:end)
B = 3×1
3 7 11
or more generally:
B = sum(reshape(A,2,[]),1).'
B = 3×1
3 7 11
or
B = reshape(A,2,[]).' * ones(2,1)
B = 3×1
3 7 11
or
B = cellfun(@sum,mat2cell(A,2*ones(1,3),1))
B = 3×1
3 7 11

更多回答（1 个）

Abdel
Abdel 2023-9-18
The sum of the last two elements in (call the result ans6)

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