CODEWITHSUNDEEP
objective-cnsstringnsarray
user3213703
user3213703

Reputation: 83

Compare (string) contents from 2 arrays

I have 2 arrays which each of them contain different strings. I want to compare strings from those 2 and display matched strings only.

for instance, if words array has list of words = "wolf", "Wolfachite", "Wolfberry", "Wolf"

and if names array has list of words = "Winnie", "Wolf", "Wolfgang"

it would display "wolf".

sadly, I am confused which steps I must take to compare those two.

  NSString *nameString = [NSString stringWithContentsOfFile:@"/usr/share/dict/propernames"
                                                     encoding:NSUTF8StringEncoding
                                                        error:NULL];

    NSString *wordString = [NSString stringWithContentsOfFile:@"/usr/share/dict/words"
                                                     encoding:NSUTF8StringEncoding
                                                        error:NULL];

  //Fill it into array

    NSArray *names = [nameString componentsSeparatedByString:@"\n"];

    NSArray *words = [wordString componentsSeparatedByString:@"\n"];

Upvotes: 0

Views: 543

Answers (2)

Indrajeet
Indrajeet

Reputation: 5666

Use this code it compares your string 

for (int i=0; i<[names count]; i++)
{
    NSString *strNames = [[names objectAtIndex:i] uppercaseString];

    for (int j=0; j<[words count]; j++)
    {
         NSString *strWords =  [[words objectAtIndex:j] uppercaseString];

        if ([strNames isEqualToString:strWords])
        {
            //your code when condition satisfied
        }
    }
}

Upvotes: 0

jtbandes
jtbandes

Reputation: 118671

A good option would be to use -[NSMutableSet intersectSet:] but note that this compares the strings using isEqual: — if you want a case-insensitive or diacritic-insensitive search then you will need to use your own custom objects and implement -isEqual: and -hash.

Upvotes: 1

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