How would you scan an array of strings for a set of substrings in objective-c?

Question

So I basically have an array of words and phrases. Some of them contain curses. I want to create a method that automatically scans each of the units in the array for curses. If

Answer 1

I'd do two nested for-loops. The first loop to scan over the phrase array and the second over the word array. In semi-pseudocode, something like:

NSMutableArray *filtered ... // etc.
// Loop over each phrase.
for (NSString *phrase in phrases) {

    // Let's assume it's acceptable
    bool good = true;

    for (NSString *word in words) {

        // If we find a single unwanted word, we'll no longer take it
        if ([phrase rangeOfString:word].location != NSNotFound) {
            good = false;

            break; // We don't need to keep iterating. 
                   // We already know it's not aceptable.
        }
    }

    if (good) [filtered insertObject:phrase];

}