impl: custom linked list

assignment/src/main/java/appointmentplanner/customlist/CustomLinkedListImpl.java

@@ -27,6 +27,21 @@ public class CustomLinkedListImpl<T> implements CustomLinkedList<T> {
     }
   }
 
+  private CustomLinkedListNode<T> traverseFind(CustomLinkedListNode<T> currentNode, T item) {
+
+    CustomLinkedListNode<T> nextNode = currentNode.getNext();
+
+    if (nextNode == null) {
+      return null;
+    }
+
+    if (currentNode.getItem().equals(item)) {
+      return currentNode;
+    }
+
+    return traverseFind(nextNode, item);
+  }
+
   @Override
   public void remove(T item) {
     // TODO Auto-generated method stub
@@ -59,8 +74,7 @@ public class CustomLinkedListImpl<T> implements CustomLinkedList<T> {
 
   @Override
   public boolean contains(T item) {
-    // TODO Auto-generated method stub
-    throw new UnsupportedOperationException("Unimplemented method 'contains'");
+    return traverseFind(head, item) != null ? true : false;
   }
 
   private int recursiveSizeCalc(CustomLinkedListNode<T> node, int count) {