fixing dumb mistake

Author: JulioBBL

Insertion Sort/InsertionSort.playground/Contents.swift

@@ -5,7 +5,15 @@
 print("Hello, Swift 4!")
 #endif
 
+/// Performs the Insertion sort algorithm to a given array
+///
+/// - Parameters:
+///   - array: the array of elements to be sorted
+///   - isOrderedBefore: returns true if the elements provided are in the corect order
+/// - Returns: a sorted array containing the same elements
 func insertionSort<T>(_ array: [T], _ isOrderedBefore: (T, T) -> Bool) -> [T] {
+    guard array.count > 1 else { return array }
+    
     var a = array
     for x in 1..<a.count {
         var y = x
@@ -19,6 +27,10 @@ func insertionSort<T>(_ array: [T], _ isOrderedBefore: (T, T) -> Bool) -> [T] {
     return a
 }
 
+/// Performs the Insertion sort algorithm to a given array
+///
+/// - Parameter array: the array to be sorted, conatining elements that conform to the Comparable protocol
+/// - Returns: a sorted array containing the same elements
 func insertionSort<T: Comparable>(_ array: [T]) -> [T] {
     var a = array
     for x in 1..<a.count {
@@ -34,6 +46,6 @@ func insertionSort<T: Comparable>(_ array: [T]) -> [T] {
 }
 
 let list = [ 10, -1, 3, 9, 2, 27, 8, 5, 1, 3, 0, 26 ]
-insertionSort(list)
-insertionSort(list, <)
-insertionSort(list, >)
+print(insertionSort(list))
+print(insertionSort(list, <))
+print(insertionSort(list, >))

Insertion Sort/InsertionSort.playground/contents.xcplayground

@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
-<playground version='5.0' target-platform='osx'>
+<playground version='5.0' target-platform='osx' executeOnSourceChanges='false'>
     <timeline fileName='timeline.xctimeline'/>
 </playground>

Insertion Sort/InsertionSort.swift

@@ -25,6 +25,8 @@ func insertionSort<T>(_ array: [T], _ isOrderedBefore: (T, T) -> Bool) -> [T] {
 /// - Parameter array: the array to be sorted, conatining elements that conform to the Comparable protocol
 /// - Returns: a sorted array containing the same elements
 func insertionSort<T: Comparable>(_ array: [T]) -> [T] {
+    guard array.count > 1 else { return array }
+
     var a = array
     for x in 1..<a.count {
         var y = x