How to find duplicate and show the count in table view

Question

I have an list of array like and I needs to show in table view

let data = ["a", "a", "b", "c"]

In my table view, I need to show all the string in each row. That i done.But i need to find the duplicate and needs to update the count like say. In my array i have a as 2 counts.

So in my table view I needs to show like

a(2)
b
c

Any help will be highly appreciated. Thanks

check this https://stackoverflow.com/questions/30545518/how-to-count-occurrences-of-an-element-in-a-swift-array — karthikeyan, Apr 16 '19 at 04:51
https://stackoverflow.com/questions/46996966/swift-4-how-to-return-a-count-of-duplicate-values-from-an-array — karthikeyan, Apr 16 '19 at 04:54
i tried that earlier, but i am using tabke view.not sure how can i populate that data as array string in to my table view..please help m eon that — drangon, Apr 16 '19 at 04:57

score 1 · Accepted Answer · answered Apr 16 '19 at 05:10

class TableVC: UIViewController {

    //MARK: - Outlet & Properties
    let data = ["a", "a", "b", "c"]
    var unique = [String]()

    @IBOutlet weak var tableView: UITableView!

    override func viewDidLoad() {
        super.viewDidLoad()


        // Do any additional setup after loading the view.
        tableView.dataSource = self
        unique = Array(Set(data)) // Here you will get Unique Elements of Array
    }

}

//MARK: - UITableView datasource
extension TableVC : UITableViewDataSource {

    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return unique.count
    }

    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {

        let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! tableCell
        cell.label.text = unique[indexPath.row] + " " +  String(data.filter{$0 == unique[indexPath.row]}.count)

        print(data.filter{$0 == unique[indexPath.row]}.count) // Here you will get COUNT of an Element.
        return cell
    }
}

How to find duplicate and show the count in table view

1 Answers1