Check that the contents of one NSArray are all in another array

Question

I have one NSArray with names in string objects like this:@[@\"john\", @\"smith\", @\"alex\", @\"louis\"], and I have another array that contains

Answer 1

 NSArray *array1 = [NSArray arrayWithObjects:@"a", @"u", @"b", @"v", @"c", @"f", nil];
    NSMutableArray *mainArray = [NSMutableArray arrayWithObjects:@"a", @"u", @"I", @"G", @"O", @"W",@"Z",@"C",@"T", nil];
    int j=0;
    for(int i=0; i < mainArray.count; i++)
    {
        if (j < array1.count)
        {
            for( j=0; j <= i; j++)
            {
                if([[mainArray objectAtIndex:i] isEqualToString:[array1 objectAtIndex:j]] )
                {
                    NSLog(@"%@",[mainArray objectAtIndex:i]);
                }
            }
        }

    }