how to find array of second minimum value based on the index value

index=[1 2 3 4 5];
p(i)=[0.1 0.2 0. 3 0.4 0.5];

based on the random position of p(i) second minimum value should occur not the index value

[Azzi Abdelmalek]

What random position? "second minimum value should occur": what does that mean?

Answer 1

[Weird Rando]

Unique function returns the vector in ascending order discarding any repetitive values. And the find function returns the index value.

p =[0.1 0.2 0.2 0.4 0.5];

a = unique(p);
find(p == a(2), 1,'first')

You can also find all the index value of the 2nd minimum value by replacing the find with

find(p == a(2))