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a simple Question about loops

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Rica
Rica 2014-3-12
编辑： Rica 2014-3-12
Hi All
for exemple:
%%
%
a=[1 2 3 5 4 8];
v=[]
v(1)=a(1);
for k=2:length(a)
if(k<3)
v(k)=v(k)*(k-1);
else
v(k)=(v(k-1)+(v(k))/3);
end
end
i get this error: Attempted to access v(2); index out of bounds because numel(v)=1.
why? thanks for yor help

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采纳的回答

Chris C
Chris C 2014-3-12
编辑：Chris C 2014-3-12
You initialize v incorrectly. Try it this way....
a=[1 2 3 5 4 8];
v=ones(length(a));
v(1)=a(1);
for k=2:length(a)
if(k<3)
v(k)=v(k)*(k-1);
else
v(k)=(v(k-1)+(v(k))/3);
end
end

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