Write A Matlab Function of a matrix

Write a matlab function which accepts n (row) by m (col) matrix. The function will exclude the repeated elements and sort the rest of the elements in descending order. (You can use any reasonable way to solve this problem).

Can u please help me about this question

[Rik]

What have you tried? You can find help here on this forum, but it is not meant as a free homework making service. You can find guidelines for posting homework on this forum here.

[Jan]

The question is not clear: "exclude the repeated elements" is ambiguous. For the input [1, 2, 1, 3] this can mean [1, 2, 3] (remove the repetitions only) or [2, 3] (remove all elements which occur repeatedly).

Does "You can use any reasonable way to solve this problem" include to submit a solution, which was written by another person?

[Rik]

Spam by flag must be the most stupid kind of posting spam. Am I correct in assuming people with the reputation level to remove this flag will see it?

[John D'Errico]

Removed. Both the spam flag, and the spam comment.

Answer 1

[ANKUR KUMAR]

A=randi(25,25,100);
ss=func(A,10,20)

function S = func(A,m,n)
B=A(1:m,1:n);
C=B(:);
id=unique(C)
S=sort(id,'descend')
end

[Jan]

Please do not post complete solution of homework questions. The teacher of the OP might consider this as trial to cheat.

I think, that "clc, clear" is not useful at all. As far as I understand the question, the input should be a [m x n] matrix directly.

[ANKUR KUMAR]

Sure Sir. I will not repeat the same.

Answer 2

[Jan]

If you are looking for a unique list of elements, start with a search in the documentation:

docsearch unique

You will find a command called unique(). See:

doc unique

Now its input should be a vector, not a matrix. Read the "Getting Started" chapter to learn, what A(:) does. For sorting:

docsearch sort

And again sort() is existing as command already.

doc sort