My solution to Challenge 2

Objective-C Programming (2nd Edition) 17. NSArray
1

Found another solution with the help of the containsObject method:

[code]#import <Foundation/Foundation.h>

int main(int argc, const char * argv[]) {
@autoreleasepool {
//read file 1
NSString *nameString = [NSString stringWithContentsOfFile:@"/usr/share/dict/propernames" encoding:NSUTF8StringEncoding error:NULL];
//read file 2
NSString *wordString = [NSString stringWithContentsOfFile:@"/usr/share/dict/words" encoding:NSUTF8StringEncoding error:NULL];

    //Array für file 1
    NSArray *names = [nameString componentsSeparatedByString:@"\n"];
    //Array für file 2
    NSArray *words = [wordString componentsSeparatedByString:@"\n"];

    int count = 0;
    
    for (NSString *n in words) {

        if ([names containsObject:n]) {
            NSLog(@"%@ is a duplicate.", n);
            count++;
        }
            
        }
    NSLog(@"Count: %d", count);
}
return 0;

}[/code]