Append array of arrays Swift

Question

I have an array of arrays called Lines

Numbers = [[1,2,3],[4,5,6],[7,8,9]]

and var numberInt = 10

how do i append this numberInt inside the last array of the multidimensional array? so it would look like

Numbers = [[1,2,3],[4,5,6],[7,8,9,10]]

Thank you.

it doesn't look like you've tried anything. you should (especially since this is literally trivial.) — The Paramagnetic Croissant, Sep 06 '15 at 18:27
How about retrieving the last element in the array an appending the number to the retrieved array — lukaswelte, Sep 06 '15 at 18:33

score 3 · Accepted Answer · edited May 23 '17 at 12:29

3

Use Numbers[Numbers.count - 1] to get last one-dimensional array and append method to add item:

Numbers[Numbers.count - 1].append(numberInt)
print(Numbers) // prints "[[1, 2, 3], [4, 5, 6], [7, 8, 9, 10]]"

I'd also recommend you to take a look at this answer: https://stackoverflow.com/a/25128237/1796907

edited May 23 '17 at 12:29

Community

answered Sep 06 '15 at 18:39

egor.zhdan

@TheParamagneticCroissant `Numbers.last ` is readonly property so I cannot use `append` – egor.zhdan Sep 06 '15 at 18:41
@TheParamagneticCroissant so not that trivial, right?) – David Robertson Sep 06 '15 at 18:42
1

Thank you for the answer. Worked like a charm. I will study the link – David Robertson Sep 06 '15 at 18:42
@DavidRobertson "so not that trivial" – why not, exactly? – The Paramagnetic Croissant Sep 06 '15 at 18:46
3

I'm with the Croissant. It's a trivial problem. – Duncan C Sep 06 '15 at 19:01

1 Answers1