From 61948c672d3a98027383e4bcc6b95d2db492f974 Mon Sep 17 00:00:00 2001
From: Mart Lubbers <mart@martlubbers.net>
Date: Tue, 3 Mar 2015 12:09:15 +0100
Subject: [PATCH] StdSet werkend

---
 week3/mart/StdSortList.icl | 41 ++++++++++++++++------------
 week4/mart/StdSet.dcl      | 25 +++++++++++++++++
 week4/mart/StdSet.icl      | 56 ++++++++++++++++++++++++++++++++++++++
 3 files changed, 105 insertions(+), 17 deletions(-)
 create mode 100644 week4/mart/StdSet.dcl
 create mode 100644 week4/mart/StdSet.icl

diff --git a/week3/mart/StdSortList.icl b/week3/mart/StdSortList.icl
index 2c8ad3f..db71a36 100644
--- a/week3/mart/StdSortList.icl
+++ b/week3/mart/StdSortList.icl
@@ -2,42 +2,49 @@ implementation module StdSortList
 
 import StdEnv
 
-::  SortList a = SortList (SortList a, a, SortList a) | Empty
+::  SortList a :== ([a], a)
 
 newSortList :: SortList a
-newSortList = Empty
+newSortList = ([], abort "Empty list")
 
 memberSort :: a (SortList a) -> Bool | Eq, Ord a
-memberSort x Empty = False
-memberSort x (le, el, gr)
-| x == e = True
-| x < el = memberSort x le
-| otherwise = memberSort x gr
+memberSort e ([], y) = y
+memberSort e ([x:xs], y)
+| e == x = True
+| e > x = False
+| otherwise = memberSort e (xs, y)
 
 insertSort :: a (SortList a) -> SortList a | Ord a
-memberSort x Empty = Sortlist (Empty, x, Empty)
-memberSort x (le, el, gr)
+insertSort e ([], y) = ([e], e)
+insertSort e ([x:xs], y)
+| e <= x = ([e:x:xs], y)
+| otherwise = ([x:fst result], snd result)
+	where result = insertSort e (xs, y)
 
 removeFirst :: a (SortList a) -> SortList a | Eq, Ord a
-removeFirst e ([], _)_ = ([], _)
+removeFirst e ([], y) = y
+removeFirst e ([e], e) = newSortList
+removeFirst e ([x:xs], y)
+| e == x = ([xs], y)
+removeFirst _ _ = abort ""
 
-removeAll :: a (SortList a) -> SortList a
-removeAll _ _ = Empty
+removeAll :: a (SortList a) -> SortList a | Eq, Ord a
+removeAll _ _ = abort ""
 
 elements :: (SortList a) -> [a]
-elements _ = []
+elements _ = abort ""
 
 count :: (SortList a) -> Int
-count _ = 0
+count _ = abort ""
 
 minimum :: (SortList a) -> a
-minimum _ = 0
+minimum _ = abort ""
 
 maximum :: (SortList a) -> a
-maximum _ = 0
+maximum _ = abort ""
 
 mergeSortList :: (SortList a) (SortList b) -> (SortList a)
-mergeSortList _ _ = Empty
+mergeSortList _ _ = abort ""
 
 Start :: String
 Start = newSortList
diff --git a/week4/mart/StdSet.dcl b/week4/mart/StdSet.dcl
new file mode 100644
index 0000000..6cad7f1
--- /dev/null
+++ b/week4/mart/StdSet.dcl
@@ -0,0 +1,25 @@
+definition module StdSet
+
+import StdClass
+
+::	Set a
+
+toSet			:: [a]             -> Set a | Eq a
+fromSet			:: (Set a)         -> [a]
+
+isEmptySet		:: (Set a)         -> Bool
+isDisjoint		:: (Set a) (Set a) -> Bool  | Eq a
+isSubset		:: (Set a) (Set a) -> Bool  | Eq a
+isStrictSubset	:: (Set a) (Set a) -> Bool  | Eq a
+memberOfSet		:: a       (Set a) -> Bool  | Eq a
+union           :: (Set a) (Set a) -> Set a | Eq a
+intersection	:: (Set a) (Set a) -> Set a | Eq a
+nrOfElements	:: (Set a) -> Int
+without			:: (Set a) (Set a) -> Set a | Eq a
+
+product			:: (Set a) (Set b) -> Set (a,b)
+
+instance zero (Set a)
+instance ==   (Set a) | Eq a
+
+powerSet		:: (Set a)         -> Set (Set a)
diff --git a/week4/mart/StdSet.icl b/week4/mart/StdSet.icl
new file mode 100644
index 0000000..a14e6ba
--- /dev/null
+++ b/week4/mart/StdSet.icl
@@ -0,0 +1,56 @@
+implementation module StdSet
+
+import StdEnv
+import StdClass
+
+::	Set a = Set [a]
+
+toSet	:: [a]             -> Set a | Eq a
+toSet s = Set (removeDup s)
+
+fromSet	:: (Set a)         -> [a]
+fromSet (Set s) = s
+
+isEmptySet	:: (Set a)         -> Bool
+isEmptySet s = isEmpty (fromSet s)
+
+isDisjoint	:: (Set a) (Set a) -> Bool  | Eq a
+isDisjoint s1 s2 = nrOfElements (intersection s1 s2) == 0
+
+isSubset	:: (Set a) (Set a) -> Bool  | Eq a
+isSubset s1 s2 = nrOfElements s1 == nrOfElements (intersection s1 s2)
+
+isStrictSubset	:: (Set a) (Set a) -> Bool  | Eq a
+isStrictSubset s1 s2 = isSubset s1 s2 && nrOfElements s1 < nrOfElements s2
+
+memberOfSet	:: a       (Set a) -> Bool  | Eq a
+memberOfSet a (Set []) = False
+memberOfSet a (Set [x:xs]) = a == x || memberOfSet a (Set xs)
+
+union	:: (Set a) (Set a) -> Set a | Eq a
+union (Set s1) (Set s2) = toSet (s1 ++ s2)
+
+intersection	:: (Set a) (Set a) -> Set a | Eq a
+intersection (Set s1) s2 = Set [e \\ e <- s1 | memberOfSet e s2]
+
+nrOfElements	:: (Set a) -> Int
+nrOfElements s = length (fromSet s)
+
+without	:: (Set a) (Set a) -> Set a | Eq a
+without (Set s1) s2 = Set [e \\ e <- s1 | not (memberOfSet e s2)]
+
+product	:: (Set a) (Set b) -> Set (a,b)
+product (Set s1) (Set s2) = Set [(e1, e2) \\ e1 <- s1, e2 <- s2]
+
+instance zero (Set a)
+where zero = Set []
+
+instance == (Set a) | Eq a
+where (==) s1 s2 = isSubset s1 s2 && isSubset s2 s1
+
+powerSet	:: (Set a)         -> Set (Set a)
+powerSet (Set a) = Set [(Set x) \\ x <- powerSet2 a]
+where
+	powerSet2	:: [a] -> [[a]]
+	powerSet2 [] = [[]]
+	powerSet2 [e:xs] = (powerSet2 xs) ++ [[e:x] \\ x <- powerSet2 xs]
-- 
2.20.1