Remove the duplicated vector in the array

Hi. I'm struggling with how to make my code.

Here is the thing. I want to get a new matrix A such that all duplicated vectors are removed. Here is my matrix A and a new matrix A that I want to get:

A = [1 3; 1 4; 1 3; 1 4; 2 3; 3 4; 3 4; 3 5; 4 5]

new A = [1 3; 1 4; 2 3; 3 4; 3 5; 4 5].

How to write the code to get new A...? I'm trying to make it as a function, however, I don't have clear ideas...

I need some help! Thank you so much!!

Answer 1

[Voss]

A = [1 3; 1 4; 1 3; 1 4; 2 3; 3 4; 3 4; 3 5; 4 5];
new_A = unique(A,'rows')

new_A = 6×2

1 3 1 4 2 3 3 4 3 5 4 5

[Sounghwan Hwang]

Awesome.... thank you so much. I didn't know that there is a unique function in the Matlab. Really appreciated!!

[Voss]

You're welcome!

Answer 2

[nandishwar]

function new_A = remove_duplicate_rows(A)

% REMOVE_DUPLICATE_ROWS Removes duplicate row vectors from matrix A.

% 'rows' treats each row as a single vector.

% 'stable' keeps the original order of the remaining unique rows.

new_A = unique(A, 'rows', 'stable');

end