Swift Sorted List Question

SortedListQuestion.swift

//: Playground - noun: a place where people can play

struct Post {
    let isLiked: Bool
    let timestamp: Int64
    let content: String
}

extension Post: Equatable {
    static func == (lhs: Post, rhs: Post) -> Bool {
        return lhs.isLiked == rhs.isLiked &&
            lhs.timestamp == rhs.timestamp &&
            lhs.content == rhs.content
    }
}

let posts = [
    Post(isLiked: false, timestamp: 8, content: "8"),
    Post(isLiked: true, timestamp: 7, content: "7"),
    Post(isLiked: false, timestamp: 6, content: "6"),
    Post(isLiked: false, timestamp: 5, content: "5"),
    Post(isLiked: false, timestamp: 4, content: "4"),
    Post(isLiked: true, timestamp: 3, content: "3"),
    Post(isLiked: false, timestamp: 2, content: "2"),
    Post(isLiked: true, timestamp: 1, content: "1")
]

let expected = [
    Post(isLiked: true, timestamp: 7, content: "7"),
    Post(isLiked: true, timestamp: 3, content: "3"),
    Post(isLiked: true, timestamp: 1, content: "1"),
    Post(isLiked: false, timestamp: 8, content: "8"),
    Post(isLiked: false, timestamp: 6, content: "6"),
    Post(isLiked: false, timestamp: 5, content: "5"),
    Post(isLiked: false, timestamp: 4, content: "4"),
    Post(isLiked: false, timestamp: 2, content: "2")
]

func sortFunc(_ posts: [Post]) -> [Post] {
    // TODO: implement sorting logic
    return []
}

let sorted = sortFunc(posts)

print(sorted == expected)