View difference between Paste ID: 1w5hf4r9 and DECuYAzx

 //
 // Created by Julio Tentor <jtentor@fi.unju.edu.ar>
 //
 
 
 public class BinaryTree<ELEMENT> {
 
 
     //region Binary Tree Node Class
 
     protected class BTNode<ELEMENT> {
 
         public ELEMENT item;
-        public BTNode<ELEMENT> left;
+        public BTNode<ELEMENT> left; //izquierdo
-        public BTNode<ELEMENT> right;
+        public BTNode<ELEMENT> right; // Derecho
 
         public BTNode() {
             this(null, null, null);
         }
         public BTNode(ELEMENT item) {
             this(item, null, null);
         }
         public BTNode(ELEMENT item, BTNode<ELEMENT> left, BTNode<ELEMENT> right) {
             this.item = item;
             this.left = left;
             this.right = right;
         }
 
         @Override
         public String toString() {
             return this.item.toString();
         }
 
         // Método para propósitos académicos
         public void Visit() {
             System.out.printf("%s ", this.item.toString());
         }
     }
     //endregion
 
 
 
 
     //region Attributes
 
-    protected BTNode<ELEMENT> root;
+    protected BTNode<ELEMENT> root; // raiz
 
     //endregion
 
 
     //region Constructors
 
     public BinaryTree() {
         this.root = null;
     }
 
     // Métodos para propósitos académicos
     public BinaryTree(ELEMENT item) {
         this(item, null, null);
     }
     public BinaryTree(ELEMENT item, BinaryTree<ELEMENT> left, BinaryTree<ELEMENT> right) {
         this.root = new BTNode<ELEMENT>(item, null, null);
         if (left != null) {
             this.root.left = left.root;
         }
         if (right != null) {
             this.root.right = right.root;
         }
     }
 
     //endregion
 
     @Override
     public String toString() {
         StringBuilder sb = new StringBuilder();
         toString(sb, this.root);
         return sb.toString();
     }
     protected void toString(StringBuilder sb, BTNode<ELEMENT> root) {
         if (root != null) {
             sb.append(root.item.toString());
             if (root.left != null) {
                 sb.append("(");
                 toString(sb, root.left);
                 if (root.right != null) {
                     sb.append(",");
                     toString(sb, root.right);
                 }
                 sb.append(")");
             } else {
                 if (root.right != null) {
                     sb.append("(,");
                     toString(sb, root.right);
                     sb.append(")");
                 }
             }
         }
     }
 
 
     public void PreOrder() {
         PreOrder(this.root);
     }
     protected void PreOrder(BTNode<ELEMENT> root) {
         if (root != null) {
             root.Visit();
             PreOrder(root.left);
             PreOrder(root.right);
         }
     }
 
     public void InOrder() {
         InOrder(this.root);
     }
     protected void InOrder(BTNode<ELEMENT> root) {
         if (root != null) {
             InOrder(root.left);
             root.Visit();
             InOrder(root.right);
         }
     }
 
     public void PostOrder() {
         PostOrder(this.root);
     }
     protected void PostOrder(BTNode<ELEMENT> root) {
         if (root != null) {
             PostOrder(root.left);
             PostOrder(root.right);
             root.Visit();
         }
     }
 
     public void DescendingOrder() {
         DescendingOrder(this.root);
     }
     protected void DescendingOrder(BTNode<ELEMENT> root) {
         if (root != null) {
             DescendingOrder(root.right);
             root.Visit();
             DescendingOrder(root.left);
         }
     }
 
 
     public int NodeCount() {
         return NodeCount(this.root);
     }
     protected int NodeCount(BTNode<ELEMENT> root) {
         if (root != null) {
             return 1 + NodeCount(root.left) + NodeCount(root.right);
         }
         return 0;
     }
 
 
     public int LeafCount() {
         return LeafCount(this.root);
     }
     protected int LeafCount(BTNode<ELEMENT> root) {
         if (root != null) {
             if ( (root.left == null) && (root.right == null) ) {
                 return 1;
             } else {
                 return LeafCount(root.left) + LeafCount(root.right);
             }
         }
         return 0;
     }
 
 
     public int InternalCount() {
         return InternalCount(this.root);
     }
     protected int InternalCount(BTNode<ELEMENT> root) {
         if (root != null) {
             if ( (root.left == null) && (root.right == null) ) {
                 return 0;
             } else {
                 return 1 + InternalCount(root.left) + InternalCount(root.right);
             }
         }
         return 0;
     }
 
 
     public int MaxLevel() {
         return MaxLevel(this.root);
     }
     protected int MaxLevel(BTNode<ELEMENT> root) {
         if (root != null) {
             if ( (root.left != null) || (root.right != null) ) {
                 int leftLevel = MaxLevel(root.left);
                 int rightLevel = MaxLevel(root.right);
                 return 1 + Math.max(leftLevel, rightLevel);
             }
             return 0;
         }
         return -1;
     }
 
 
     public int Height() {
         return MaxLevel() + 1;
     }
 }