What's the Best Way to Shuffle an NSMutableArray?

Question

If you have an NSMutableArray, how do you shuffle the elements randomly?

(I have my own answer for this, which is posted below, but I\'m new to Cocoa an

Answer 1

Edit: This is not correct. For reference purposes, I did not delete this post. See comments on the reason why this approach is not correct.

Simple code here:

- (NSArray *)shuffledArray:(NSArray *)array
{
    return [array sortedArrayUsingComparator:^NSComparisonResult(id obj1, id obj2) {
        if (arc4random() % 2) {
            return NSOrderedAscending;
        } else {
            return NSOrderedDescending;
        }
    }];
}