custom-sortInPlace.swift

var mutable_array: [Int] =  [ 2, 8, 10, 3, 6, 5, 4, 7, 1, 9]

mutable_array.sortInPlace() 
{ 
    let pares: (lhs: Bool, rhs: Bool) = (lhs: ($0 % 2 == 0), rhs: ($1 % 2 == 0))
    
    switch pares
    {
        case (true, false):
            return false
        case (false, true):
            return true
        default:
            return $0 < $1
    }
}

print(mutable_array.descriptionWithSeparator(", "))

// En la consola de depuración se verá...
// 1, 3, 5, 7, 9, 2, 4, 6, 8, 10