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

april woolley
april woolley
429 Points

We also learned about reading values from an array. Retrieve the 5th item (remember array indexes start at 0) and assign

We also learned about reading values from an array. Retrieve the 5th item (remember array indexes start at 0) and assign the result to a constant named value.

arrayOfInts = [1,2,3,4,5,6,7,8]

arrayOfInts [6] let value = arrayOfInts [6]

How is this incorrect?

array.swift
// Enter your code below

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

arrayOfInts.append (7)

[1,2,3,4,5,6,7] + [8]

arrayOfInts = [1,2,3,4,5,6,7,8]

arrayOfInts [6]
let value = arrayOfInts [6]

1 Answer

If indexes start at 0 the first item has an index of 0. This means the fifth item will have an index of 4.