1) suppose node1 is at level = 4 of the tree and node2 is at level = 3 of
the tree

if you do inorder traversal from node1 i.e calling function inorder(node1);
now it will search form level 4 to the max depth of the tree
it will never reach node2 because it is at level = 3.

2) suppose root of the tree is X

node1 lies of the left subtree of the root and node2 lies on the right
subtree of the root.

now after saving address of node1 and node2 , you start inorder traversal
at node1 or at node2.

suppose if you call inorder(node1);
it will search node2 in the left subtree of the root X...taking node2 as a
root of the traversal , but node2 lies on the right subtree of root X.

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