Swift mastermind

Question

I try to make a Mastermind in swift but I can't get each digit of the random number using an index to check if I found a number of the code. I tried this but it's not works.. :

import UIKit

class ViewController: UIViewController {

    @IBOutlet weak var textField: UITextField!
    @IBOutlet weak var textView: UITextView!

    var code = String(arc4random_uniform(9000) + 1000)

    override func viewDidLoad() {
        super.viewDidLoad()
        println(code)
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    override func touchesBegan(touches: NSSet, withEvent event: UIEvent) {
        self.view.endEditing(true)
    }

    @IBAction func sendDidPressed(sender: AnyObject) {
        var find = 0

        for (var i = 0; i < 4; i++) {

            var number = textField.text
            var numberInCode = map(code) { String($0) }

            if contains(numberInCode, String(find)) {
                find++
            }

            self.textView.text = "\(self.textField.text): Bien placées: \(String(find))"
        }
    }

    @IBAction func resetCode(sender: AnyObject) {

    }
}

I need help

What are you trying in your code? It doesn't make a lot of sense. — Eendje, May 14 '15 at 16:22
It appears that he is trying to get each digit of the 4 digit random number individually. — Will M., May 14 '15 at 16:24
Please be clear on what you mean by "not works." What precisely do you expect to happen? What precisely does happen? — Rob Napier, May 14 '15 at 17:22

score 0 · Answer 1 · edited May 23 '17 at 11:43

0

If you're trying to get each digit of the random number individually:

class ViewController: UIViewController {

    var code = [String]()
    let textFromField = "1" // Text from your textField

    override func viewDidLoad() {
        let number = String(arc4random_uniform(9000) + 1000)
        code = map(number) { String($0) }
    }

    @IBAction func sendDidPressed(sender: AnyObject) {
        for index in 0..<code.count {
            if textFromField == code[index] {
                println("Match found at index: \(index + 1)")
            }
        }
    }
}

code is now an Array with the numbers separated as Strings

You should change the way you convert the random number to Int because according to this post:

Int(arc4random()) will crash 50% of the time it's executed on a 32-bit platform because a UInt32 won't fit in an Int32

EDIT: Simplified things

edited May 23 '17 at 11:43

Community

1
1

answered May 14 '15 at 16:27

Eendje

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I'm not entirely sure what you want, but you should be able to get what you need with this example – Eendje May 14 '15 at 16:35
Can you explain me what you did ? – theabstractdev May 14 '15 at 16:46
First, you generate a random number, convert the number to `String` and store it in `code`. `map()` converts `code` to an array of type `String` and store it in `separated`. Now you have an array and can try to check if the array contains `find` using `contains()`. – Eendje May 14 '15 at 16:51
Now it will iterate through the array of "numbers" and check if the "number" of your textfield matches with any of them. – Eendje May 14 '15 at 17:32

Will M. · Answer 2 · 2015-05-14T16:48:54.313

0

Turn the random number into an array of characters,

var code = (arc4random_uniform() % 9000 + 1000)  //e.g. 1245
var codeAsArray = Array(String(code))    //e.g. [1, 2, 4, 5]

for (var i = 0; i < 4; i++) {
   // var number = textField.text

    println(codeAsArray[i]) //is a swift Character
}

edited May 14 '15 at 16:48

answered May 14 '15 at 16:35

Will M.

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Swift mastermind

2 Answers2