sum even and odd places values

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Jay Hanuman
Jay Hanuman 2016-11-7
编辑： Andrei Bobrov 2016-11-7
I have
A=[4 6 2 1 45 98 2 3 65 12 32 32 15 42 15 14].
how to sum even and odd places values of A. i.e.
B(even places sum)=6+1+98+3+12+32+42+14=208,
C(odd places sum)=4+2+45+2+65+32+15+15=180.
how to do it

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回答（2 个）

Andrei Bobrov
Andrei Bobrov 2016-11-7
编辑：Andrei Bobrov 2016-11-7
B = sum(A(2:2:end));
C = sum(A(1:2:end));
Alexandra Harkai
Alexandra Harkai 2016-11-7
len = length(A);
B = sum(A(mod(1:len, 2)==0));
C = sum(A(mod(1:len, 2)==1));

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