setUnion(), setIntersection()

[coreys]

Here's two functions I made out of boredom from something I learned in about in math today.

PHP Code:

public function setUnion(set1, set2) {
  temp.set = set1;
  for (i=0; i<set2.size(); i++) {
    if (!set2[i] in set1)
      temp.set.add(set2[i]);
  }
  temp.set.sortascending();
  return temp.set;
}
public function setIntersection(set1, set2) {
  temp.set = NULL;
  for (i=0; i<set2.size(); i++) {
    if (set2[i] in set1)
      temp.set.add(set2[i]);
  }
  temp.set.sortascending();
  return temp.set;
} 


If you didn't know, sets are pretty much arrays. setUnion(set1, set2) essentially combines two arrays, and setIntersection(set1, set2) makes an array of values that are in both sets (arrays).

[Chompy]

Hmm, nice Vash