Question

I have random data (names) in strings that I need to compare. Data (names) will not always be the same but it will be in this format.

For example, I have two NSString like this:

NSString *string1= @"Jordan Mike Liam Taylor Jill Gordon Phil Mark";

NSString *string2= @"Marcus Tony Taylor Anny Keenan Brittany Gordon Mike";

Based on these 2 strings, we can see that both strings contain Mike| Taylor | Gordon

So the count of same data between these two strings is 3. However I am not able to get it work via code.
The following below is what I have thus far. I feel that I am close but not quite there and would really appreciated some help from the community. Thank you in advance!

NSMutableArray *tempArray= [[NSMutableArray alloc] init];
[tempArray addObject:string1];
[tempArray addObject:string2];

NSCountedSet *bag = [[NSCountedSet alloc] initWithArray:tempArray];

NSString *mostOccurring;
NSUInteger highest = 0;
for (NSString *s in bag)
{
    if ([bag countForObject:s] > highest)
    {
        highest = [bag countForObject:s];
        mostOccurring = s;
    }
}
NSLog(@"Most frequent string: %d", highest);

EDIT CODE

NSUInteger highest = 1;
NSUInteger theCount=0;
for (NSString *s in bag)
{
    if ([bag countForObject:s] > highest)
    {
        highest = [bag countForObject:s];
        mostOccurring = s;

    }
if (highest ==2)
{
    theCount++;
}

}
NSLog(@"Most frequent string: %d", theCount);

Answer 1

I am late to answer this question, but have a look here :

NSString *string1= @"Jordan Mike Liam Taylor Jill Gordon Phil Mark a";
NSString *string2= @"Marcus Tony Taylor Anny Keenan Brittany Gordon Mike";
NSMutableSet *set1=[NSMutableSet setWithArray:[string1 componentsSeparatedByString:@" "]];
NSMutableSet *set2=[NSMutableSet setWithArray:[string2 componentsSeparatedByString:@" "]];
[set1 intersectSet:set2];

NSArray *intersect=[set1 allObjects];//intersect contains all the common elements

NSLog(@"Common count is  %ld.",[intersect count]);