Solution Data Structures: Use Depth First Search in a Binary Search TreePassed

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Solution:

Solution
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.inorder = function(root=this.root, arr = []) {
    if(!root) return null;
    this.inorder(root.left, arr);
    arr.push(root.value);
    this.inorder(root.right, arr);
    return arr;
  }

  this.preorder = function(root=this.root, arr = []) {
    if(!root) return null;
    arr.push(root.value);
    this.preorder(root.left, arr);
    this.preorder(root.right, arr);
    return arr;
  }

  this.postorder = function(root=this.root, arr = []) {
    if(!root) return null;
    this.postorder(root.left, arr);
    this.postorder(root.right, arr);
    arr.push(root.value);
    return arr;
  }
  // Only change code above this line
}

Challenge: Use Depth First Search in a Binary Search Tree

Link to the challenge:

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