Problem 7. Column Removal

I don't know why my answer is wrong but please tell me..

function B = column_removal(A,n)

A=A(:,[1:n-1 n+1:end]);

haha=size(A);hasil=[];

A=A';

A=A(:)';

B =A;

end

[Jan]

@ricardo: In general it is a good idea when you ask in the forum, that you explain, why you assume, that there is an error. E.g. post the complete message, if you get an error, or explain the difference between your expectations and the results. Relying of the power of the forum users to guess the problem works sometimes only.

Answer 1

[Image Analyst]

Simply set that column to null to remove it:

function B = column_removal(A,n)
   B = A; % Initialize.
   B(:, n) = [];

Isn't that what you saw as the correct answer?

[ricardo gunawan]

wew thx for answering but i want to ask

at line 2 there is B=A; that line is going terminate the function is it?

my previous programming is c++

[Image Analyst]

No it's not. The function terminates when

it hits the end of the file, or
it hits an "end" statement, or
it hits another "function" statement, or
it hits a "return" statement.

[Jan]

@ricardo: The basics of Matlab are explained in the Getting Started chapters of the documentation. It is more efficient to read them than to ask the forum to retell it.

Answer 2

[Azzi Abdelmalek]

There is no error in your code. What is the expected result?

If you want to remove a column number n

A=magic(5)  % Example
n=3   % column to be removed
Result=A;
Result(:,n)=[]

[ricardo gunawan]

I think to much for easy problem wkwkw....

(~‾ ▽‾)~

[Azzi Abdelmalek]

What?

[Jan]

@ricardo: Neither wkwkw nor the fancy character thing is useful here. We are interested in Matlab, but not cool.