Solutions: Strings and String Formatting

- (NSString *) favoriteCheeseStringWithCheese:(NSString *)cheeseName {
    return [NSString stringWithFormat:@"My favorite cheese is %@.", cheeseName];
}

- (NSString *) cheeseNameWithoutCheeseSuffix:(NSString *)cheeseName {
    NSString *returnString = cheeseName;
    
    if ([[cheeseName lowercaseString] hasSuffix:@" cheese"]) {
        NSRange cheeseRange = [cheeseName rangeOfString:@" cheese" options:NSCaseInsensitiveSearch | NSBackwardsSearch];
        returnString = [cheeseName stringByReplacingCharactersInRange:cheeseRange withString:@""];
    }
    
    return returnString;
}

- (NSString *) numberOfCheesesStringWithCheeseCount:(NSUInteger)cheeseCount {
    NSString *cheeseString = (cheeseCount == 1 ? @"cheese" : @"cheeses");
    return [NSString stringWithFormat:@"%d %@", cheeseCount, cheeseString];
}