struct node
{
int data;
struct node* left;
struct node* right;
};
struct node* newNode(int );
/* Function to find least comman ancestor of n1 and n2 */
int leastCommanAncestor(struct node* root, int n1, int n2)
{
/* If we have reached a leaf node then LCA doesn't exist
If
then solution i posted aboive is correct in that case???plz comment
On Fri, May 17, 2013 at 9:49 AM, avinesh saini avinesh.sa...@gmail.comwrote:
If one node is parent of other then Parent Node is lowest common ancestor.
Source- http://en.wikipedia.org/wiki/Lowest_common_ancestor (just read
static Node LCA(Node root, int a, int b) {
if (root == null)
return null;
if (root.getData() == a || root.getData() == b)
return root;
Node root1 = LCA(root.getLeft(), a, b);
Node root2 = LCA(root.getRight(), a, b);
if (root1 !=
[image: BST_LCA]
what should be ancestor of 12 and 14.it should be 12 or
14...if 12 then for 20 and 22 also it is 20...if 12 ans 14 has
ancestor as 8 then for 20 and 22 it is NULL.
@allplz give me clear one line definition in case if one node is parent
of other then
If one node is parent of other then Parent Node is lowest common ancestor.
Source- http://en.wikipedia.org/wiki/Lowest_common_ancestor (just read it)
On Mon, May 13, 2013 at 1:42 AM, rahul sharma rahul23111...@gmail.comwrote:
[image: BST_LCA]
what should be ancestor of 12 and 14.it
@rahul : It's fine solution, but can we check the root-data == n1 || n2
before calling function recursively, I think if we check this condition 1st
it will reduce unnecessary function calls.
Correct me if i am wrong?
Thanks,
Tushar Patil.
On Sun, Apr 21, 2013 at 10:26 PM, rahul sharma
