// a + b
func scpUnion(a, b []int) []int {
sa := setFromIntSlice(a)
sb := setFromIntSlice(b)
sc := set.Union(sa, sb)
c := set.IntSlice(sc)
orderScp(c)
return c
}
// ab
func scpIntsc(a, b []int) []int {
sa := setFromIntSlice(a)
sb := setFromIntSlice(b)
sc := set.Intersection(sa, sb)
c := set.IntSlice(sc)
orderScp(c)
return c
}
// a\b
func scpDiff(a, b []int) []int {
sa := setFromIntSlice(a)
sb := setFromIntSlice(b)
sc := set.Difference(sa, sb)
c := set.IntSlice(sc)
orderScp(c)
return c
}