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

Em Har
Em Har
9,775 Points
Posted by Em Har
Em Har
9,775 Points

Array of Int

Can someone walk with me on this one?

array.swift 
// Enter your code below

var arrayOfInts: [Int] = [1,2,3,4,5,6]

arrayOfInts + [7]
arrayOfInts.append(8)

arrayOfInts[4] 

let value = [4]

1 Answer

Shlomi Bittan
Shlomi Bittan
6,718 Points
Shlomi Bittan
Shlomi Bittan
6,718 Points

Hi Emil, These are the steps you need to follow:

First, create an array of ints with 6 numbers:

var arrayOfInts: [Int] = [1,2,3,4,5,6]

Second, add an item via the append method:

arrayOfInts.append(7)

Third, add an item using concatenation, and assign back the result:

arrayOfInts = arrayOfInts + [8]

And finally, assigne the 5th item to a constant value.

Retrieve the 5th item (remember array indexes start at 0) and assign the result to a constant named value.

let value = arrayOfInts[4]