5. Mirror of a Binary tree

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5. Mirror of a Binary tree


Problem link :- click here


package Binary_Tree;

public class BinaryTree__5
{
	
	static void inorder(Node root)
	{
		if(root == null)
			return;
		inorder(root.left);
		System.out.print(root.data + "  ");
		inorder(root.right);
	}
	
	static Node mirror(Node root)
	{
		if(root == null)
			return root;
		
		Node node = new Node();
		
		node.data = root.data;
		node.left = mirror(root.right);
		node.right = mirror(root.left);
		
		return node;
	}
	
	public static void main(String[] args)
	{
		BinaryTree tree = new BinaryTree();
		int arr[] = {10, 20, 30, 40, 60};
		tree.root = tree.createTree(arr, 0);
		
		System.out.println("Inorder of the given tree : ");
		inorder(tree.root);
		
		Node root2 = mirror(tree.root);
		System.out.println("\nInorder of the mirror tree : ");
		inorder(root2);
	}

}

Time complexity :- O(n)
Space complexity :- O(n)

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