IQ test, why does matlab see different answers?
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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 Commento
Oleg Komarov
il 6 Ago 2012
You can format your code: http://www.mathworks.com/matlabcentral/answers/13205-tutorial-how-to-format-your-question-with-markup
Risposta accettata
Kye Taylor
il 6 Ago 2012
Your inner loop should run from
j = 1:c
not
j = i:c
2 Commenti
Sean de Wolski
il 6 Ago 2012
Please accept the answer that helped you resolve this in order to mark the thread closed.
Più risposte (1)
Star Strider
il 6 Ago 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.
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