Clopton Code Challenge (IExperience)

CloptonCodeChallenge.playground/Contents.swift

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+//: Playground - noun: a place where people can play
+
+import UIKit
+
+// Larissa Clopton - Code Challenge
+
+// Challenge #1
+func swap<T>(inout x: T, inout with y: T)
+{
+    // swap two values
+    (x, y) = (y, x)
+}
+
+var x = "Larissa", y = "Clopton"
+swap(&x,&y)
+
+
+// Challenge #2
+func flexStrings(str1: String = "", str2: String = "") -> String
+{
+    // concatenate 0, 1, or 2 strings
+    return (str1 + str2 == "") ? "none": (str1 + str2)
+} 
+
+flexStrings()
+flexStrings("One")
+flexStrings("One", str2: "Two")
+
+
+// Challenge #3
+func sumAny(items: Any...) -> String
+{
+    // add a variable number of items of any type, return as string
+    return String((items.map({value in
+        switch value {
+            case "" as String, 0 as Int:
+                return -10
+            case let str as String where Int(str) > 0:
+                return Int(str)!
+            case is Int:
+                return value as! Int
+            default:
+                return 0
+        }
+    }) as [Int]).reduce(0) {
+        $0 + $1
+    })
+}
+
+let sum = sumAny("Marin Todorov", 2, 22, "-3", "10", "", 0, 33, -5)
+
+
+// Challenge #4
+func countFrom(from: Int, to: Int)
+{
+    // count from one number to another
+    if from > to {
+            return
+    }
+    else {
+            print(from)
+            countFrom(from + 1, to: to)
+    }
+}
+
+countFrom(1, to: 5)
+

CloptonCodeChallenge.playground/contents.xcplayground

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+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<playground version='5.0' target-platform='ios'>
+    <timeline fileName='timeline.xctimeline'/>
+</playground>