Need help with a Scala programming problem:

object fp1 {

// EXAMPLE: here is the definition of the factorial function.

def fact (n : Int) : Int = {

if (n

1

else

n * fact (n - 1)

}

 // Write a function "swap" that takes a pair of an Int and a String, and returns a // pair of a String and an Int (with the values from the pair passed an argument. E.g., swap (p1) // should return ("hello", 7). You can use "p._1" and "p._2" to access the first and second // components of a pair. def swap (p:(Int,String)) : (String,Int) = { // TODO: Provide definition here. null } 

RULES *1. Submissions MUST compile using SBT with UNCHANGED configuration and tests with no compilation errors. Submissions with compilation errors will receive 0 points Note that refactoring the code will cause the tests to fail. *2. You MUST NOT edit the SBT configuration and tests. Altering it in your *result in 0 points for this assignment. 3. You MUST NOT use while loops or (re)assignment to variables (you can submission will use "val" declarations but not "var" declarations) You must use recursion instead. *4. You may declare auxiliary functions if you like.