Array Count in Swift in Swift

We can get the count of an array using the .count property:

var ourArray = [50, 40, 30]

// Printing the count:
print(ourArray.count) // Output: 3

// Changing the array:
ourArray.remove(at: 2)

// Printing the new count:
print(ourArray.count) // Output: 2

Using the count

We can use the count to access items from the end of an array.

Because arrays are 0-indexed, the index of the last item is count - 1:

var ourArray = [50, 40, 30]

let count = ourArray.count

// Printing the last item:
print(ourArray[count - 1]) // Output: 30

// Printing the second to last item:
print(ourArray[count - 2]) // Output: 40

Assignment
Follow the Coding Tutorial and let's play with some arrays.

Hint
Look at the examples above if you get stuck.