Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

iOS Swift Collections and Control Flow Introduction to Collections Working With Arrays

Posted by Michael Cheung
Michael Cheung
Courses Plus Student 505 Points

Hi , can anyone tell me how to do this question ?

HI pls teach me how to do , I really need ur help , thank you /

array.swift 
// Enter your code below
var arrayOfInts = [1,2,3,4,5,6]

arrayOfInts.append(7)
arrayOfInts = arrayOfInts + [8]

let value = arrayOfInts.retrive(at :5)

2 Answers

Jialong Zhang
Jialong Zhang
9,821 Points
Jialong Zhang
Jialong Zhang
9,821 Points 
//challenge 1
var arrayOfInts = [1,2,3,4,5,6]

//challenge 2
arrayOfInts.append(7)
let anotherArray = [8]
arrayOfInts = arrayOfInts + anotherArray

//challenge 3

let value = arrayOfInts[4]

//challenge 4

let discardedValue = arrayOfInts.remove(at: 5)
Michael Cheung
Michael Cheung
Courses Plus Student 505 Points

Hey , @Jialong Zhang , thank you soooooo much , It do helps alot .

Jialong Zhang
Jialong Zhang
9,821 Points
Jialong Zhang
Jialong Zhang
9,821 Points

You are welcome. glad I could help.