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

what is wrong?

I don´t understand where is my mistake

// Enter your code below
var arrayOfInts = [1,2,3,4,5,6]
[1,2,3,4,5,6,7] + [8]

let value = arrayOfInts[5]


The challenge is to retrieve the 5th item. Counting array starts with 0. So use 4 to retrieve the 5th value.

1 Answer

Deneen Edwards
Deneen Edwards
5,626 Points
// Create an Array of 6 numbers
 var arrayOfInts = [1, 2, 3, 4, 5, 6] 

// Add a 7th number using append method

// Add an 8th number using concatenation and assign back to arrayOfInts
// NOTE: Use your variable, and assign the array back to the variable
arrayOfInts = arrayOfInts + [8]    // OR This Way arrayOfInts += [8]

// Assign the 5th item in the array to constant value...NOTE: the array index starts at 0
let value = arrayOfInts[4]

//Remove the 6th item in the array and assign to discardedValue...NOTE: the array index starts at 0
let discardedValue = arrayOfInts.remove(at:5)