Tree Preorder Traversal using Java

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/*
Node is defined as

class Node {
    int data;
    Node left;
    Node right;
}
*/




  1. void Preorder(Node root) {
  2. System.out.print(root.data + " ");

  4.     if (root.left != null) {
  5.         Preorder(root.left);
  6.     } 
  7.     
  8.     if (root.right != null) {
  9.         Preorder(root.right);
  10.     }
  11. }

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