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traversel code mistake #1478

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traversel code mistake #1478

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4 changes: 2 additions & 2 deletions lectures/20-trees/code/AVL/.project
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Original file line number Diff line number Diff line change
Expand Up @@ -22,12 +22,12 @@
</natures>
<filteredResources>
<filter>
<id>1679078569810</id>
<id>1745508412347</id>
<name></name>
<type>30</type>
<matcher>
<id>org.eclipse.core.resources.regexFilterMatcher</id>
<arguments>node_modules|.git|__CREATED_BY_JAVA_LANGUAGE_SERVER__</arguments>
<arguments>node_modules|\.git|__CREATED_BY_JAVA_LANGUAGE_SERVER__</arguments>
</matcher>
</filter>
</filteredResources>
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4 changes: 2 additions & 2 deletions lectures/20-trees/code/Questions/.project
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Original file line number Diff line number Diff line change
Expand Up @@ -22,12 +22,12 @@
</natures>
<filteredResources>
<filter>
<id>1679078569810</id>
<id>1745508412393</id>
<name></name>
<type>30</type>
<matcher>
<id>org.eclipse.core.resources.regexFilterMatcher</id>
<arguments>node_modules|.git|__CREATED_BY_JAVA_LANGUAGE_SERVER__</arguments>
<arguments>node_modules|\.git|__CREATED_BY_JAVA_LANGUAGE_SERVER__</arguments>
</matcher>
</filter>
</filteredResources>
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41 changes: 21 additions & 20 deletions lectures/20-trees/code/introduction/BinaryTree.java
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Original file line number Diff line number Diff line change
Expand Up @@ -84,41 +84,42 @@ private void prettyDisplay(Node node, int level) {

public void preOrder() {
preOrder(root);
}
}

private void preOrder(Node node) {
private void preOrder(Node node) {
if (node == null) {
return;
return;
}
System.out.print(node.value + " ");
preOrder(node.left);
preOrder(node.right);
}
}

public void inOrder() {
preOrder(root);
}
public void inOrder() {
inOrder(root); // ❗ Corrected this line
}

private void inOrder(Node node) {
private void inOrder(Node node) {
if (node == null) {
return;
return;
}
preOrder(node.left);
inOrder(node.left); // ❗ Corrected this line
System.out.print(node.value + " ");
preOrder(node.right);
}
inOrder(node.right); // ❗ Corrected this line
}

public void postOrder() {
preOrder(root);
}
public void postOrder() {
postOrder(root); // ❗ Corrected this line
}

private void postOrder(Node node) {
private void postOrder(Node node) {
if (node == null) {
return;
return;
}
preOrder(node.left);
preOrder(node.right);
postOrder(node.left); // ❗ Corrected this line
postOrder(node.right); // ❗ Corrected this line
System.out.print(node.value + " ");
}
}


}