Executing loop on certain numbers
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Raghavendra Reddy P
le 11 Mai 2015
Commenté : Raghavendra Reddy P
le 11 Mai 2015
i have two vectors L=1:12; idx=[3 5 9]; I wanted to execute for loop for i=12:-1:1 now i want execute vector idx, starting from last elemet to first i.e 9,5,3 something like
if i==9
do stuff
end
if i==5
do stuff
end
.
.
if i==3
do stuff
end
end
i don't know how many elements in vector idx before hand.
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Stephen23
le 11 Mai 2015
Modifié(e) : Stephen23
le 11 Mai 2015
idx = [3,5,9];
for k = idx(end:-1:1)
... code here
end
3 commentaires
Stephen23
le 11 Mai 2015
Modifié(e) : Stephen23
le 11 Mai 2015
for k = idx(end:-1:1)
switch k
case 9
... code
case 5
... code
case 3
... code
otherwise
error('This values is not known: %d',k)
end
end
But, depending on what those calculations are, there might be much easier and faster ways of achieving this. If you tell us exactly what the do stuff operations actually are, then we might be able to tidy this up too. Can the the vector idx change, or is it always the same?
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