Selecting 3 Random Elements from a list Without Repetition

Dear All:

I have a row vector of a=[375.7,515.3,432.3,530.7,454.4,490.7,503.4,449.9,509.0,447.2,474.2,398.3,410.6] and I want to select 3 random values for all possible combinations without a repetition.

Could anyone help me with this case? Thanks.

With my best regards,

Mohammed

Answer 1

[KSSV]

Read about nchoosek.

P = [375.7,515.3,432.3,530.7,454.4,490.7,503.4,449.9,509.0,447.2,474.2,398.3,410.6] ;
idx = nchoosek(1:length(P),3) ;
iwant = P(idx)

[KHAN]

Hi nchoosek:

Thanks a lot for your answer! I will use you code in my work. Thanks again.

Best regards,

Mohammed