How to exchange elements in swift array?

Question

I have one simple array like:

var cellOrder = [1,2,3,4] 

I want to exchange elements like suppose a second element with first element.

And result will be:

[2,1,3,4] 

I know we can use exchangeObjectAtIndex with NSMutableArray But I want to use swift array. Any ways to do same with swift [Int] array?

Answer 1

Use swap:

var cellOrder = [1,2,3,4] swap(&cellOrder[0], &cellOrder[1]) 

Alternately, you can just assign it as a tuple:

(cellOrder[0], cellOrder[1]) = (cellOrder[1], cellOrder[0])