Hello guy, Today we will learn about Array list Rearrangement in swift.
Sometimes we need to change the position of the array like I want to change the array index 6 value to index 2 and remain list is the same as per their position. At that time we need to do array rearrangement. let’s start with an example.
Getting Started:-
Step1:- Firstly, Create an Xcode project
File –> New –> Project –> iOS –> Next and add your project name then create.
Step 2:- Secondly, Create a table view in the storyboard.
Step 3:- Now, Create a swift class and add the code and run the code.
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import UIKit class ViewController: UIViewController { @IBOutlet weak var listTableView: UITableView! var arrayList:[String] = ["one", "Two", "Three", "Four","Five", "Six","Seven", "Eight", "Nine", "Ten"] override func viewDidLoad() { super.viewDidLoad() listTableView.delegate = self listTableView.dataSource = self listTableView.reloadData() // Do any additional setup after loading the view. } } extension ViewController : UITableViewDelegate, UITableViewDataSource { func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int { return arrayList.count } func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell { if let cell = tableView.dequeueReusableCell(withIdentifier: "ListTableViewCell") as? ListTableViewCell { cell.valueLabel.text = arrayList[indexPath.row] return cell } return UITableViewCell() } func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat { return 50 } } |
And the output is –
Step 4:- Now, I want to change the position of the array list. In my example I want to change the number nine position at index 2, For this, I need to call a function.
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func arrayRearrange<T>(array: Array<T>, fromIndex: Int, toIndex: Int) -> Array<T>{ var arrayValue = array let element = arrayValue.remove(at: fromIndex) arrayValue.insert(element, at: toIndex) return arrayValue } |
Step 5:- Function calling to change the position. you just need to call
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arrayList = arrayRearrange(array: arrayList, fromIndex: 8, toIndex: 2) |
Step 6:- Lastly, Run the project and see the result!!!
In this screenshot, you will see that number nine is shifted to position 2, and the remaining array is the same.
Conclusion:-
In this blog, we have discussed Array list Rearrangement in swift.
I hope this blog will help you to understand the rearrangement process of the array.
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Thanks for reading!!!
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