Difference between sort and sortInPlace in swift 2?

Question

I have been trying to use the sortInPlace function in swift but it is not working. When I use the sort function instead of sortinplace it works.

Please explain the d

Answer 1

var mutableArray = [19, 7, 8, 45, 34]

// function sort sorts the array but does not change it. Also it has return

mutableArray.sort()

mutableArray
// prints 19, 7, 8, 45, 34

// function sortInPlace will mutate the array. Do not have return

mutableArray.sortInPlace()

mutableArray
// prints 7, 8, 19, 34, 45