In swift algorithms, how to get the second items of a chunked collection?

let a = ["a", "b", "c", "d", "e"]
let chunked = a.chunks(ofCount: 2) //["a", "b"] ["c", "d"] ["e"]

Now I want to get the ["c", "d"]

I can get the range using

chunked.index(chunked.startIndex, offsetBy: 1) //Index(baseRange: Range(2..<4))

But after that, I don't know how to get the exact result.

Please help!

CodePudding user response：

You've already got the index. Just use the subscript syntax to access the collection:

chunked[chunked.index(chunked.startIndex, offsetBy: 1)]

This will give you an ArraySlice<String>. Printing this will give you ["c", "d"].