Avoid for loops with if inside

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Alireza
Alireza 2012-9-4
Hello everyone,
This is my code:
counter=1;
for i=1:size(A,1)
for j=counter:size(B,1)
if D(1,B(j,1))>0
if B(j,2)-A(i,2)<5
C(A(i,1),B(j,1))=C(A(i,1),B(j,1))+1;
D(1,B(j,1))=D(1,B(j,1))-1;
B(j,3)=1;
counter=j+1;
end
break;
end
end
end
A is an 100*3 matrix B is an 1000*3 matrix C is an 100*1000 matrix D is an 1*1000 matrix
So, can it be written by much less computational effort? Any comment is very appreciated! Thanks!

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回答（1 个）

Doug Hull
Doug Hull 2012-9-6
If it is working, what are you trying to accomplish by changing it. Have you run it through the profiler to find out that this is the bottleneck in your code slowing it down?
  1 个评论
Alireza
Alireza 2012-9-6
Thank you! Yes, you are right! That was not the bottleneck of my code. I checked the run time and that was fine.

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