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Insertion in a Binary Search Tree JAVA

Insertion in a Binary Search Tree :_

Insertion in a BST follow simple operations. All the elements less than root lies on left subtree and all the elements greater than root lies on right subtree.

Every BST class will have a root variable of Node type that represents the head node of the tree.


public class BinarySearchTree {

 Node root;
 
 public BinarySearchTree()
 {
  root=null;
 }
 
 public Node insert(Node node,Node root)
 {
  if(root==null)
  {
   root=node;
   return root;
  }
  else{
  
  if(node.data>root.data)
  {
   
   root.right=insert(node,root.right);
  
  }
  else if(node.data<root.data)
  {
   root.left=insert(node,root.left);
  }
  
  }
  return root;
 }
}

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//deleting a given keypublic Node deleteKeyNode(Node head,int key){//traverse pointer Node temp=head;//previous pointer Node prevtemp=temp;while(temp!=null){//when key is at head positionif(key==head.data){ head=head.next; System.out.println("head is deleted");return head;}//when key is at any position other than headif(temp.data==key){ prevtemp.next=temp.next; temp.next=null; temp=prevtemp;} prevtemp=temp; temp=temp.next;}return head;}