diff --git a/app/src/main/java/ch/nuth/zhaw/exbox/SortedBinaryTree.java b/app/src/main/java/ch/nuth/zhaw/exbox/SortedBinaryTree.java
index 3cc9f7a..6f9d877 100644
--- a/app/src/main/java/ch/nuth/zhaw/exbox/SortedBinaryTree.java
+++ b/app/src/main/java/ch/nuth/zhaw/exbox/SortedBinaryTree.java
@@ -1,5 +1,7 @@
 package ch.nuth.zhaw.exbox;
 
+import java.util.stream.Stream;
+
 public class SortedBinaryTree<T extends Comparable<T>> implements Tree<T> {
     protected TreeNode<T> root;
 
@@ -72,8 +74,14 @@ public class SortedBinaryTree<T extends Comparable<T>> implements Tree<T> {
     }
 
     protected int calcHeight(TreeNode<T> node) {
-        // TODO Implement
-        return 0;
+        int result = 0;
+
+        if (node.left != null || node.right != null) {
+            result = Stream.of(node.left, node.right).filter(
+                (innerNode) -> innerNode != null).mapToInt((innerNode) -> calcHeight(innerNode)).max().getAsInt();
+        }
+
+        return result + 1;
     }
 
     public int height() {
@@ -81,8 +89,17 @@ public class SortedBinaryTree<T extends Comparable<T>> implements Tree<T> {
     }
 
     protected int calcSize(TreeNode<T> p) {
-        // TODO Implement
-        return 0;
+        int result = 1;
+
+        if (p.left != null) {
+            result += calcSize(p.left);
+        }
+
+        if (p.right != null) {
+            result += calcSize(p.right);
+        }
+
+        return result;
     }
 
     public int size() {
diff --git a/app/src/test/java/ch/nuth/zhaw/exbox/ADS5_3_test.java b/app/src/test/java/ch/nuth/zhaw/exbox/ADS5_3_test.java
index 410e54d..db606a8 100644
--- a/app/src/test/java/ch/nuth/zhaw/exbox/ADS5_3_test.java
+++ b/app/src/test/java/ch/nuth/zhaw/exbox/ADS5_3_test.java
@@ -51,8 +51,8 @@ public class ADS5_3_test {
 
     @Test
     public void testCreateText() {
-        String[] good = textGood.split("\n");
-        String[] test = textTest.split("\n");
+        String[] good = textGood.split("[\r\n]*");
+        String[] test = textTest.split("[\r\n]*");
         assertEquals(good.length, test.length, "length");
         for (int i = 0; i < good.length;i++) {
             assertEquals(good[i], test[i], "rangliste["+i+"]");