Comment body goes here.

Think like this way, you are at i’th level and next pointer for all node for i’th level are fixed somehow and you are at the front node of the i’th level, how do you fix the next pointers for all node of next level?

Boomm: You need the front pointer for the next level so that you start same journey again and a pointer that helping to fixe next pointers for the next level’s nodes that will have to start from the front node of the next level.

void Solution::connect(TreeLinkNode* A) {

```
auto root = A;
while(root)
{
TreeLinkNode* n_root = NULL;
TreeLinkNode* curr = NULL;
while(root)
{
if(root->left)
{
if(!n_root) n_root = root->left, curr = root->left;
else curr->next = root->left, curr = curr->next;
}
if(root->right)
{
if(!n_root) n_root = root->right, curr = root->right;
else curr->next = root->right, curr = curr->next;
}
root = root->next;
}
root = n_root;
}
//return A;
```

}