Reading random values from an array

Question

I have an array with a 14 strings. I want to display each of these 14 strings to the user without duplicates. The closest I got was creating an array of integers and shuffli

Answer 1

This task is very easy using an NSMutableArray. In order to do this, simply remove a random element from the array, display it to the user.

Declare a mutable array as an instance variable

NSMutableArray * questions;

When the app launches, populate with values from myArray

questions = [[NSMutableArray alloc] initWithArray:myArray]];

Then, to get a random element from the array and remove it, do this:

int randomIndex = (arc4random() % [questions count]);
NSDictionary * anObj = [[[questions objectAtIndex:randomIndex] retain] autorelease];
[questions removeObjectAtIndex:randomIndex];
// do something with element
hintText.text = [anObj objectForKey:@"hint"];
questionText.text = [anObj objectForKey:@"question"];