This sample code generates a random number and checks whether its already present in the array.
If yes then it will not add else it will add, thus generating a random array without duplicates.

-(NSMutableArray *) generateRandomArray : (int) max{
    NSMutableArray *randArray = [NSMutableArray new];
    for (int k = 0; k < max; k++) {
       int r = arc4random() % max;
        if([randArray containsObject:[NSString stringWithFormat:@"%d", r]]){
            k--;
        }else{
            [randArray addObject:[NSString stringWithFormat:@"%d", r]];
        }
    }
    NSLog(@"RAND %@",randArray);
    return randArray;
}

Please leave your valuable comments if you found this post useful.

 

Leave a Reply

Your email address will not be published. Required fields are marked *

 

 

 

Theme by HermesThemes

Copyright © 2018 CoderzHeaven. All Rights Reserved

Please wait...

Subscribe to our newsletter

Want to be notified when our article is published? Enter your email address and name below to be the first to know.