IQ test, why does matlab see different answers?

1 view (last 30 days)
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-----------------------------------

Accepted Answer

Kye Taylor
Kye Taylor on 6 Aug 2012
Your inner loop should run from
j = 1:c
not
j = i:c
  2 Comments
Sean de Wolski
Sean de Wolski on 6 Aug 2012
Please accept the answer that helped you resolve this in order to mark the thread closed.

Sign in to comment.

More Answers (1)

Star Strider
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.
  1 Comment
Algirdas Kluonius
Algirdas Kluonius on 6 Aug 2012
u are also right , because of i instead of 1 it was a fcn for a upper triangle :) thx again

Sign in to comment.

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!