Remove Duplicate copy from array

NSArray *arrWithAllObjects = [[NSArray alloc] initWithObjects: @"Nitin", @"Nitin",@"Aniket", @"Sachin", @"Amol", nil];

NSArray *arrWithoutDuplicate = [[NSSet setWithArray: arrWithAllObjects] allObjects];

NSLog(@"New Array With Duplicate %@", arrWithAllObjects);

NSLog(@"New Array Without Duplicate %@",arrWithoutDuplicate);