So i’ve been struggling with this for quite a while now, but I simply can’t figure out what is going wrong with my code. It prints out several words but not “wolf”. Thanks in advance!
NSArray *names = [nameString componentsSeparatedByString:@"\n"];
//Save last item
NSMutableString *lastOne = [[NSMutableString alloc]init];
// Go through the array one string at a time
for (NSString *n in names) {
//compare to last one
if ([n caseInsensitiveCompare:lastOne] == NSOrderedSame) {
NSLog(@"%@", lastOne);
}
[lastOne setString:[n lowercaseString]];
}[/code]
Please provide us with your whole code ellipsisfeathomer. The part you gave looks like you’re only wanting to lowercase your last word ! So what’s the point for the challenge ?
I would also like to provide you with my first code I made. The idea was great but did not give the result wanted in this challenge.
void findMatchingNamesAndWords(NSArray *iterateFrom, NSArray *whereTo)
{
// Go through the array one string at a time
for (NSString *what in iterateFrom)
{
// Go through the other array one string at a time
for (NSString *match in whereTo)
{
// Case Insensitive check for a matching string
NSComparisonResult leResultat = [what caseInsensitiveCompare:match];
// If found write it to the console and no need to go further...
if (leResultat == NSOrderedSame)
{
NSLog(@"%@ is the same as %@", what, match);
break;
}
}
}
}
int main (int argc, const char * argv[])
{
@autoreleasepool
{
// Read in a file as a huge string (ignoring the possibility of an error)
NSString *nameString =
[NSString stringWithContentsOfFile:@"/usr/share/dict/propernames"
encoding:NSUTF8StringEncoding
error:NULL];
NSString *wordString =
[NSString stringWithContentsOfFile:@"/usr/share/dict/words"
encoding:NSUTF8StringEncoding
error:NULL];
// Break it into an array of strings
NSArray *names = [nameString componentsSeparatedByString:@"\n"];
NSArray *words = [wordString componentsSeparatedByString:@"\n"];
// Choose the shortest NSArray to iterate from
NSUInteger sizeOfNames = [names count];
NSUInteger sizeOfWords = [words count];
if (sizeOfNames < sizeOfWords)
{
findMatchingNamesAndWords(names, words);
} else {
findMatchingNamesAndWords(words, names);
}
}
return 0;
}
Can you figure it out why ?
Consider it as another Challenge
I did succeed in finding why and how to make it work tho
NSArray *names = [nameString componentsSeparatedByString:@"\n"];
//Save last item
NSMutableString *lastOne = [[NSMutableString alloc]init];
// Go through the array one string at a time
for (NSString *arraystring in names) {
//compare lastOne and arraystring
if ([arraystring caseInsensitiveCompare:lastOne] == NSOrderedSame) {
NSLog(@"%@", lastOne);
}
[lastOne setString:arraystring]
}[/code]
The concept behind it is as follows: the loop goes through every item of the array, saving the last one it went through to an outside variable. the next time, it checks whether the current item is equal to the previous one (via the previously saved variable). if they are (which is supposed to be the case only with “wolf” and “Wolf”), then it should print out the item but unfortunately it doesn’t.
PS: the code I provided earlier was a little messy, caseInSensitiveCompare and setting the variable to lower case is pointless
Problem solved, but now I feel really stupid. The code does just what it’s supposed to do. I checked out the “words” file and noticed that in fact everything printed out was in there twice in a row.
Could you guys please check if the code is good. It gives to many matches, but it seems to be correct. I’m absolutely new in Objective-C, so I would like to know your opinions:
#import <Foundation/Foundation.h>
int main(int argc, const char * argv[])
{
@autoreleasepool {
// Read in a file as a huge string (ignoring the possibility of an error)
NSString *nameString =
[NSString stringWithContentsOfFile:@"/usr/share/dict/propernames"
encoding:NSUTF8StringEncoding
error:NULL];
// Break it into an array of strings
NSArray *names = [nameString componentsSeparatedByString:@"\n"];
NSString *wordString =
[NSString stringWithContentsOfFile:@"/usr/share/dict/words"
encoding:NSUTF8StringEncoding
error:NULL];
// Go through the array one string at a time
for (NSString *n in names) {
// Look for the string "aa" in a case-insensitive manner
NSRange r = [wordString rangeOfString:n options:NSCaseInsensitiveSearch];
// Was it found?
if (r.location != NSNotFound) {
unichar *buf = malloc(r.length*sizeof(unichar));
[wordString getCharacters:buf range:r];
NSString *result = [NSString stringWithCharacters:buf length:r.length];
printf("\"%s\" in the names list matches \"%s\" in the words list\n", [n UTF8String], [result UTF8String]);
}
}
}
return 0;
The code does just what it’s supposed to do. I checked out the “words” file and noticed that in fact everything printed out was in there twice in a row.