Random numbers reoccur when generating with arc4random

Asked Jul 17 '15 at 02:31

Active Jul 17 '15 at 02:45

Viewed 25 times

I need to make random choices from the questions in my quiz app, but this code I've written repeats numbers. How can I prevent the repeats?

var correctans = num1.text!.toInt()! + num2.text!.toInt()!
    var randomans1 = (arc4random()%8) + 1
    var randomans2 = (arc4random()%7) + 1
    var randomans3 = (arc4random()%6) + 1
    var randomans4 = (arc4random()%5) + 1


    switch (randomplace) {

        case 1:

            btn3.setTitle("\(correctans)", forState: UIControlState.Normal)
            btn4.setTitle("\(randomans1)", forState: UIControlState.Normal)
            btn2.setTitle("\(randomans3)", forState: UIControlState.Normal)
            btn1.setTitle("\(randomans4)", forState: UIControlState.Normal)

            break

edited Jul 17 '15 at 02:45

jscs

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asked Jul 17 '15 at 02:31

user3814765

1

If I'm understanding correctly, I'd recommend putting all the choices in an array then randomly pulling them out of the array one by one to set the title. – Lyndsey Scott Jul 17 '15 at 02:34
How would i go about that I'm not great with arrays? – user3814765 Jul 17 '15 at 02:39
means you are saying out of 4 random answer you are getting same number multiple times? – Pravin Tate Jul 17 '15 at 02:41
Further reading (which leads to further reading): [Non-repeating arc4random_uniform](http://stackoverflow.com/q/10233517) – jscs Jul 17 '15 at 02:48

Random numbers reoccur when generating with arc4random

0 Answers0