Convert a binary tree into its mirror tree

problem link

Code:

class Node{
int data;
Node left, right;
Node(int data){
    this.data = data;
}
}

public class MirrorTree {
   
    Node root;
   
    void converToMirror(Node node){
       
        if(node == null){
            return;
        }
       
        Node temp = node.right;
        node.right = node.left;
        node.left = temp;
        converToMirror(node.left);
        converToMirror(node.right);
    }
   
    void printTree(Node node){
       
        if(node == null)
            return;
       
        printTree(node.left);
        System.out.print(node.data+" ");
        printTree(node.right);
    }
   
    public static void main(String[] args){
        MirrorTree tree = new MirrorTree();
       
       
        tree.root = new Node(1);
        tree.root.left = new Node(3);
        tree.root.right = new Node(2);
        tree.root.right.left = new Node(5);
        tree.root.right.right = new Node(4);
       
        tree.printTree(tree.root);
       
        tree.converToMirror(tree.root);
       
        System.out.println();
       
        tree.printTree(tree.root);
       
       
    }

}


Output:

3 1 5 2 4
4 2 5 1 3


Verified my approach with:

stackoverflow

second answer

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