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Hello can you help me please how can i get the leaf in the Binary Tree.I Dont have idea on the leaf?...can you help me please thank you in advance hoping for your positive response...

here is my code...

```
public void insertNum(int n)
{
Node temp=null;
Node current=null;
Node newNode = new Node();
newNode.num=n;
if(isEmpty())
{
root=newNode;
System.out.println("Successfully inserted!");
return;
}
temp=root;
while(temp!=null)
{
if(temp.num==n)
{
return;
}
if(temp.num<n)
{
current=temp;
if(temp.rlink==null)
{
temp.rlink=newNode;
System.out.println("Inserted at the right= "+current.num);
}
else
{
temp=temp.rlink;
}
}
else
{
current=temp;
if(temp.llink==null)
{
temp.llink=newNode;
System.out.println("Inserted at the left= "+current.num);
}
else
{
temp=temp.llink;
}
}
}
}
```