From f74eb15489ef7953b464cbbd1b03dbaedc5a3691 Mon Sep 17 00:00:00 2001
From: Manish <manish@radii.dev>
Date: Sun, 27 Aug 2023 16:21:19 +1000
Subject: [PATCH] Data Structures: Add a New Element to a Binary Search Tree

---
 Data Structures/bstAddElement.js | 35 ++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 Data Structures/bstAddElement.js

diff --git a/Data Structures/bstAddElement.js b/Data Structures/bstAddElement.js
new file mode 100644
index 0000000..5722665
--- /dev/null
+++ b/Data Structures/bstAddElement.js	
@@ -0,0 +1,35 @@
+// https://www.freecodecamp.org/learn/coding-interview-prep/data-structures/add-a-new-element-to-a-binary-search-tree
+
+var displayTree = (tree) => console.log(JSON.stringify(tree, null, 2));
+function Node(value) {
+  this.value = value;
+  this.left = null;
+  this.right = null;
+}
+function BinarySearchTree() {
+  this.root = null;
+  // Only change code below this line
+  this.add = (item) => {
+    const newNode = new Node(item);
+    if (this.root === null) {
+      this.root = newNode;
+    }
+    let parentNode = null;
+    let nodeBranch = "left";
+    let node = this.root;
+    while (node !== null) {
+      parentNode = node;
+      if (node.value == item) {
+        return null;
+      } else if (node.value < item) {
+        nodeBranch = "right";
+        node = node.right;
+      } else {
+        nodeBranch = "left";
+        node = node.left;
+      }
+    }
+    parentNode[nodeBranch] = newNode;
+  };
+  // Only change code above this line
+}