Update solution for use-breadth-first-search-in-a-binary-search-tree.english.md (#38221)

* Update use-breadth-first-search-in-a-binary-search-tree.english.md

* Update curriculum/challenges/english/08-coding-interview-prep/data-structures/use-breadth-first-search-in-a-binary-search-tree.english.md

Committed suggested changes

Co-Authored-By: Tom <20648924+moT01@users.noreply.github.com>

* add debugging function to solution

Ensured seed code and solution matched-up.

Co-Authored-By: Tom <20648924+moT01@users.noreply.github.com>

Co-authored-by: Tom <20648924+moT01@users.noreply.github.com>
Co-authored-by: Shaun Hamilton <51722130+Sky020@users.noreply.github.com>

curriculum/challenges/english/08-coding-interview-prep/data-structures/use-breadth-first-search-in-a-binary-search-tree.english.md

@@ -106,7 +106,42 @@ BinarySearchTree.prototype = Object.assign(
 <section id='solution'>
 
 ```js
-// solution required
+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;
+  // change code below this line
+  this.levelOrder = (root = this.root) => {
+    if(!root) return null;
+    let queue = [root];
+    let results = [];
+    while(queue.length > 0) {
+      let node = queue.shift();
+      results.push(node.value);
+      if(node.left) queue.push(node.left);
+      if(node.right) queue.push(node.right);
+    }
+    return results;
+  }
+
+  this.reverseLevelOrder = (root = this.root) => {
+    if(!root) return null;
+    let queue = [root];
+    let results = [] ;
+    while ( queue.length > 0) {
+      let node = queue.shift();
+      results.push(node.value);
+      if(node.right) queue.push(node.right);
+      if(node.left ) queue.push(node.left);
+    }
+    return results;
+  }
+  // change code above this line
+}
 ```
 
 </section>