Refactor List and Tree

2022-04-04 12:48:13 +02:00
parent 4bb1d6a36c
commit cda144aa2a
4 changed files with 81 additions and 79 deletions
--- a/src/BodyLinkedList.java
+++ b/src/BodyLinkedList.java
@@ -225,3 +225,37 @@ public class BodyLinkedList implements Iterable<Body> {
        };
    }
 }
+
+class BodyLinkedListItem {
+    private final Body body;
+    private BodyLinkedListItem prev;
+    private BodyLinkedListItem next;
+
+    public BodyLinkedListItem(Body body) {
+        this.body = body;
+        this.prev = null;
+        this.next = null;
+    }
+
+    public Body body() {
+        return body;
+    }
+
+    public BodyLinkedListItem prev() {
+        return prev;
+    }
+
+    public void setPrev(BodyLinkedListItem prev) {
+        this.prev = prev;
+        if (prev != null) prev.next = this;
+    }
+
+    public BodyLinkedListItem next() {
+        return next;
+    }
+
+    public void setNext(BodyLinkedListItem next) {
+        this.next = next;
+        if (next != null) next.prev = this;
+    }
+}