while loop performance improvement

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cglr
cglr 2019-11-17
编辑： cglr 2019-11-18
Hello everyone,
What is the alternative of while loop for the example:
rate = 2;
while (k <= period)
sum = sum + array(k,2);
k = k + rate;
end
Thanks.

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Fabio Freschi
Fabio Freschi 2019-11-17
I don't know the starting value of k, assuming it is 1
idx = 1:rate:period
mysum = sum(array(idx,2)); % note that sum is the name of a matlab function
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cglr
cglr 2019-11-18
编辑：cglr 2019-11-18
Thank you.
maxDuration = 0;
while (k <= period)
if( myArray (k,2) > maxDuration)
maxDuration = myArray (k,2);
end
k = k + rate;
end
If I make it more complex with if statement like that, how can I use that idea ?

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