public class CSMath
{
	public static void main(String [] args)
	{

	}
	public static int[] getUnion(int[] setA, int[] setB)
	{
		int[] combined = ArrayManip.joinArrays(setA, setB);
		return ArrayManip.removeDuplicates(combined);
	}
	public static int[] getIntersection(int[] setA, int[] setB)
	{
		return ArrayManip.commonElements(setA, setB);
	}
	public static boolean isInjective(int[] setA, int[] setB, int[] firstF, int[] secF)
	{
		return ArrayManip.hasDuplicates(secF);
	}
	public static boolean isSurjective(int[] setA, int[] setB, int[] firstF, int[] secF)
	{


		return ArrayManip.hasDuplicates(firstF);
	}
}