Scala : week2: implement intersect and diff

1 files changed, 2 insertions, 2 deletions

diff --git a/Scala/funsets/src/main/scala/funsets/FunSets.scala b/Scala/funsets/src/main/scala/funsets/FunSets.scala
index c6d5ea5..1fd2d31 100644
--- a/Scala/funsets/src/main/scala/funsets/FunSets.scala
+++ b/Scala/funsets/src/main/scala/funsets/FunSets.scala
@@ -32,13 +32,13 @@ object FunSets {
    * Returns the intersection of the two given sets,
    * the set of all elements that are both in `s` and `t`.
    */
-  def intersect(s: Set, t: Set): Set = ???
+  def intersect(s: Set, t: Set): Set = (x => s(x) & t(x))
 
   /**
    * Returns the difference of the two given sets,
    * the set of all elements of `s` that are not in `t`.
    */
-  def diff(s: Set, t: Set): Set = ???
+  def diff(s: Set, t: Set): Set = (x => s(x) & !t(x))
 
   /**
    * Returns the subset of `s` for which `p` holds.