Fixed SSList Iterators

Signed-off-by: bartimaeusnek <33183715+bartimaeusnek@users.noreply.github.com>

Former-commit-id: ac9f5e451758b0e50ae33e6fc02985f77d4e4596

2 files changed, 19 insertions, 12 deletions

diff --git a/src/main/java/com/github/bartimaeusnek/bartworks/util/selfsortinglist/SSList.java b/src/main/java/com/github/bartimaeusnek/bartworks/util/selfsortinglist/SSList.java
index 11ce5ebafc..769b32638d 100644
--- a/src/main/java/com/github/bartimaeusnek/bartworks/util/selfsortinglist/SSList.java
+++ b/src/main/java/com/github/bartimaeusnek/bartworks/util/selfsortinglist/SSList.java
@@ -197,7 +197,7 @@ public class SSList<E> implements List<E>, Deque<E>, Set<E> {
         // <0,1,3> N<0,3,2> <3,2,4> <2,4,5>
     }
 
-    private SSListNode<E> getNode(int index) {
+    SSListNode<E> getNode(int index) {
         if (index <= (size / 2)) {
             SSListNode<E> x = head;
             for (int i = 0; i < index; i++)
@@ -337,12 +337,12 @@ public class SSList<E> implements List<E>, Deque<E>, Set<E> {
 
     @Override
     public ListIterator<E> listIterator() {
-        return new SSListIterators.SSListListIterator<>(head,tail);
+        return new SSListIterators.SSListListIterator<>(head,tail,false);
     }
 
     @Override
     public ListIterator<E> listIterator(int index) {
-        return null;
+        return new SSListIterators.SSListListIterator<>(this,index);
     }
 
     @Override
diff --git a/src/main/java/com/github/bartimaeusnek/bartworks/util/selfsortinglist/SSListIterators.java b/src/main/java/com/github/bartimaeusnek/bartworks/util/selfsortinglist/SSListIterators.java
index c3f3aba347..83b3c66046 100644
--- a/src/main/java/com/github/bartimaeusnek/bartworks/util/selfsortinglist/SSListIterators.java
+++ b/src/main/java/com/github/bartimaeusnek/bartworks/util/selfsortinglist/SSListIterators.java
@@ -35,15 +35,24 @@ public class SSListIterators {
         final SSListNode<E> tail;
         SSListNode<E> current;
         int counter = 0;
-        public SSListListIterator(SSListNode<E> head,SSListNode<E> tail) {
+        boolean reverse;
+        public SSListListIterator(SSListNode<E> head,SSListNode<E> tail, boolean reverse) {
             this.head = head;
             this.tail = tail;
-            current = null;
+            current = reverse ? tail : head;
+            this.reverse = reverse;
+        }
+
+        public SSListListIterator(SSList<E> list, int index) {
+            this.head = list.head;
+            this.tail = list.tail;
+            current = list.getNode(index);
+            counter = index;
         }
 
         @Override
         public boolean hasNext() {
-            return head != current;
+            return reverse ? head != current : tail != current;
         }
 
         @Override
@@ -56,7 +65,7 @@ public class SSListIterators {
 
         @Override
         public boolean hasPrevious() {
-            return tail != current;
+            return !reverse ? head != current : tail != current;
         }
 
         @Override
@@ -97,8 +106,7 @@ public class SSListIterators {
         final SSListNode<E> head;
         SSListNode<E> current;
         public SSListIterator(SSListNode<E> head) {
-            this.head = head;
-            current = null;
+            this.head = this.current = head;
         }
 
         @Override
@@ -118,9 +126,8 @@ public class SSListIterators {
         final SSListNode<E> tail;
         SSListNode<E> current;
 
-        public SSListReverseIterator(SSListNode<E> head) {
-            this.tail = head;
-            current = null;
+        public SSListReverseIterator(SSListNode<E> tail) {
+            this.tail = this.current = tail;
         }
 
         @Override