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 个评论
Oleg Komarov
2012-8-6
You can format your code: http://www.mathworks.com/matlabcentral/answers/13205-tutorial-how-to-format-your-question-with-markup
采纳的回答
Kye Taylor
2012-8-6
Your inner loop should run from
j = 1:c
not
j = i:c
2 个评论
Algirdas Kluonius
2012-8-6
Sean de Wolski
2012-8-6
Please accept the answer that helped you resolve this in order to mark the thread closed.
更多回答（1 个）
Star Strider
2012-8-6
0 个投票
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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2012-8-6
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