How to avoid the repetition of events ?

I am using dde23 solver.

p = sol.ie()

p = 6 4 2 3 1 17 17 21 21 27

I dont want the same event to happen again.What to do to avoid the repetition of same event?

For eg I dont want 17th event should happen 2 time i.e I want it should happen only once.

Answer 1

[Akira Agata]

How about using unique function?

p = [6 4 2 3 1 17 17 21 21 27];
p = unique(p,'stable');

The output becomes like this:

>> p

ans =

6 4 2 3 1 17 21 27

[parag gupta]

I was talking about events.I am using dde23 solver so I want same event should not happen again