MATLAB: Other uses of the unique function

Question

I'd like to get a unique combo of the two columns. In my data set, both two columns are sorted, e.g.

a = [
1 2;
1 2;
1 3;
2 2;
2 2;
3 2;
3 3;
3 3;
3 4;
]

I would like to get the output as:

output = [
1 2;
1 3;
2 2;
3 2;
3 3;
3 4;
]

Does any experts know how to code? Thanks in advance!!

Answer 1

unique(a,'rows')