Updated Run-Length Encoding to Swift 4.2

Author: RandyTheDev

Run-Length Encoding/RLE.playground/Contents.swift

@@ -1,10 +1,5 @@
 //: Playground - noun: a place where people can play
 
-// last checked with Xcode 9.0b4
-#if swift(>=4.0)
-print("Hello, Swift 4!")
-#endif
-
 import Foundation
 
 let originalString = "aaaaabbbcdeeeeeeef"
@@ -64,7 +59,7 @@ func testBufferWithoutSpans() -> Bool {
     // data ends up being longer.
     var bytes: [UInt8] = []
     for i in 0..<1024 {
-        bytes.append(UInt8(i%256))
+        bytes.append(UInt8(i % 256))
     }
     return encodeAndDecode(bytes)
 }