Two different random generated numbers in Swift

Question

I want that my two random generated labels does not generate the same number like 5 and 5

I have done everything else but this

else if rightScoreLabel == leftScoreLabel {
// what goes here?
{

sorry i’m starter

Welcome to stack overflow. Please [take the tour](https://stackoverflow.com/tour). — Xcoder, Nov 27 '17 at 22:01

score 3 · Accepted Answer · edited Nov 27 '17 at 18:38

3

Try approaching this another way: keep generating new numbers until you have two different values.

var a = 0
var b = 0
while a == b {
    a = Int(arc4random_uniform(10))
    b = Int(arc4random_uniform(10))
}

Alternatively, you can regenerate just one of the numbers:

var a = Int(arc4random_uniform(10))
var b = 0
repeat {
    b = Int(arc4random_uniform(10))
} while a == b

edited Nov 27 '17 at 18:38

Russell

answered Nov 27 '17 at 18:14

Sweeper

1

Why generate `a` more than once? – rmaddy Nov 27 '17 at 18:15
@maddy I just thought that might be more intuitive. I will edit the answer. – Sweeper Nov 27 '17 at 18:16
why generate `b` if you're just going to keep going until it matches `a` - surely this is an algorithm for generating ONE random number? – Russell Nov 27 '17 at 18:23
@Russell The 2nd set of code only repeats while the two are the same. Once `b` is different, the loop stops. – rmaddy Nov 27 '17 at 18:35
d'oh. i read the description, not the code! 'until they are equal' should be 'while they are equal'! – Russell Nov 27 '17 at 18:37

1 Answers1