how to generalize a nested for-loop?
显示 更早的评论
Hello all,
Per my earlier question in http://www.mathworks.com/matlabcentral/answers/252008-a-simpler-way-of-doing-a-nested-loop
Is there a way to generalize that nested loop so that it works for any sizes of V? Thank you.
采纳的回答
per isakson
2015-11-2
编辑：per isakson
2015-11-2
Try
>> tic, for ii = 1:5000, h1 = cssm( 4 ); end, toc
Elapsed time is 0.279794 seconds.
>> tic, for ii = 1:5000, h1 = cssm( 6 ); end, toc
Elapsed time is 0.950556 seconds.
where
function h1 = cssm( N )
% V = [1+1i, 1-1i, -1+1i, -1-1i];
V = rand(1,N)+1i*rand(1,N);
n = length(V);
h1 = zeros(n, n, n, n);
for m1 = 1:n
c = 0.3 * V(m1);
for m2 = 1:n
c = c + 0.2 * V(m2);
for m3 = 1:n
c = c + 0.5 * V(m3);
for m4 = 1:n
h1(m1,m2,m3,m4) = c + 0.8 * V(m4);
end
end
end
end
end
It already works for "any" length of V - or I missed something
3 个评论
Mnr
2015-11-2
per isakson
2015-11-2
Don't know, however you wrote "works for any sizes of V?"
Mnr
2015-11-2
更多回答（0 个）
类别
在 帮助中心 和 File Exchange 中查找有关 Loops and Conditional Statements 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
