IQ test, why does matlab see different answers?
1 view (last 30 days)
Show older comments
I have simple program which I will use later for more difficult, why do i get different answers for FIND and IF ------------------MATLAB code here-------------------------------------------
clear all, clc
b=0;
d=0;
b=[];
A=rand(5,5);
[r,c]=size(A);
inx=find(A>0.5);
disp(['There are ' num2str(length(inx)) ' no numbers more than 4'])
for i=1:r;
for j=i:c;
if A(i,j)>0.5;
d=d+1;
b=[b A(i,j)];
end;
end;
end;
if d>0;
disp(['There are ' num2str(d) ' numbers more than 4'])
else d==0;
disp(['There are no numbers more than 4'])
end;
---------------------End of MATLAB code-----------------------------------
1 Comment
Oleg Komarov
on 6 Aug 2012
You can format your code: http://www.mathworks.com/matlabcentral/answers/13205-tutorial-how-to-format-your-question-with-markup
Accepted Answer
Kye Taylor
on 6 Aug 2012
Your inner loop should run from
j = 1:c
not
j = i:c
2 Comments
Sean de Wolski
on 6 Aug 2012
Please accept the answer that helped you resolve this in order to mark the thread closed.
More Answers (1)
Star Strider
on 6 Aug 2012
MATLAB doesn't see different answers, your code does. In your ‘for’ loop you're only seeing the upper triangular part of ‘A’. The ‘find’ function sees the entire ‘A’ matrix.
See Also
Categories
Find more on Loops and Conditional Statements in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!