How do I shuffle an array in Swift?

Question

How do I randomize or shuffle the elements within an array in Swift? For example, if my array consists of 52 playing cards, I want to shuffle the array in o

Answer 1

It stop at "swap(&self[i], &self[j])" when I upgrade the xCode version to 7.4 beta.
fatal error: swapping a location with itself is not supported

I found the reason that i = j (function of swap will exploded)

So I add a condition as below

if (i != j){
    swap(&list[i], &list[j])
}

YA! It's OK for me.