Add Inorder Traversal in Kotlin

Updated inorder

Tree_Inorder_Traversal/Inorder_Traversal.kt

@@ -0,0 +1,62 @@
+//Code for printing inorder traversal in kotlin
+
+class Node
+{
+    //Structure of Binary tree node
+    int num;
+    Node left, right; 
+    public node(int num)
+    {
+        key = item;
+        left = right = null;
+    }
+}
+
+class BinaryTree
+{
+    Node root;
+    BinaryTree()
+    {
+        root = null;
+    }
+    //function to print inorder traversal
+    fun printInorder(Node: node):void		
+    {
+        if (node == null)
+        return;
+        printInorder(node.left);
+        //printing val of node
+        println(node.num); 
+        printInorder(node.right);
+    }
+
+    fun printInorder():void
+    {
+        printInorder(root);
+    }
+}
+
+ //Main function
+fun main()  
+{
+    BinaryTree tree = new BinaryTree();
+    var read = Scanner(System.`in`)
+    println("Enter the size of Array:")
+    val arrSize = read.nextLine().toInt()
+    var arr = IntArray(arrSize)
+    println("Enter data of  binary tree")
+
+   for(i in 0 until arrSize)
+   {
+       arr[i] = read.nextLine().toInt()
+       tree.root = new Node(arr[i]);
+   }
+
+   println("Inorder traversal of binary tree is");
+   tree.printInorder();//function call
+}
+
+/*
+Input: 10 8 3 30 5 19 4 5 1
+Output:5 3 1 2 8 10 19 30 4
+*/