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Identify integers in a matrix

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Krish Desai
Krish Desai 2015-9-27
关闭： MATLAB Answer Bot 2021-8-20
Task: Write a function sumDiv5 which receives one input argument and returns how many elements of the input variable are divisible by 5.
When I have a row vector I am able to calculate this, but when I input a matrix my answer does not display correctly, what is wrong with my code?
function output= sumDiv5 (numbers)
A= floor(rem(numbers,5));
count=sum(A==0);
output=count;
Example of what happens:
>> sumDiv5(4:9)
ans =
1
>> sumDiv5([0 1 2 3 4; 2 5 8 13 15])
ans =
1 1 0 0 1
>>

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回答（1 个）

Image Analyst
Image Analyst 2015-9-27
You were told how to do this in your duplicate question: http://www.mathworks.com/matlabcentral/answers/245287#comment_312443
You didn't use (:) like you were told, so it's not doing it on the whole 2D matrix but on each column one column at a time.

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