insert bst code example

Example 1: bst to insert tree

struct Node
{
    int data;
    Node *left, *right;
};
 
// Function to create a new binary tree node having a given key
Node* newNode(int key)
{
    Node* node = new Node;
    node->data = key;
    node->left = node->right = nullptr;
 
    return node;
}
 
// Function to perform inorder traversal on the tree
void inorder(Node* root)
{
    if (root == nullptr) {
        return;
    }
 
    inorder(root->left);
    cout << root->data << " ";
    inorder(root->right);
}
 
// Recursive function to insert a key into a BST
Node* insert(Node* root, int key)
{
    // if the root is null, create a new node and return it
    if (root == nullptr) {
        return newNode(key);
    }
 
    // if the given key is less than the root node, recur for the left subtree
    if (key < root->data) {
        root->left = insert(root->left, key);
    }
    // if the given key is more than the root node, recur for the right subtree
    else {
        root->right = insert(root->right, key);
    }
 
    return root;
}

Example 2: python code for binary search tree

#Complete Binary Search Tree Using Python 3

class node:
    def  __init__(self,data):
        self.data=data
        self.left=None
        self.right=None

class binarytree:
    def __init__(self):
        self.root=None

#INSERT

    def insert(self,data):
        if self.root==None:				
            self.root=node(data)
        else:
            self._insert(data,self.root)
    def _insert(self,data,cur_node):
        if data<cur_node.data:
            if cur_node.left==None:			
                cur_node.left=node(data)
            else:
                self._insert(data,cur_node.left) 
        elif data>cur_node.data:			
            if cur_node.right==None:
                cur_node.right=node(data)
            else:
                self._insert(data,cur_node.right)
        else:
            print('Data In Treee Already')

#REMOVE

    def remove(self,data):
        if self.root!=None:
            self._remove(data,self.root)
    def _remove(self,data,cur_node):
        if cur_node == None:
            return cur_node
        if data<cur_node.data:
            cur_node.left=self._remove(data,cur_node.left)
        elif data>cur_node.data:
            cur_node.right=self._remove(data,cur_node.right)
        else:
            if cur_node.left is None and cur_node.right is None:
                print('Removing Leaf Node')
                if cur_node==self.root:
                    self.root=None
                del cur_node
                return None
            if cur_node.left is None:
                print('Removing None with Right Child')
                if cur_node==self.root:
                    self.root=cur_node.right
                tempnode=cur_node.right
                del cur_node
                return tempnode
            elif cur_node.right is None:
                print('Removing None with Left Child')
                if cur_node==self.root:
                    self.root=cur_node.left
                tempnode=cur_node.left
                del cur_node
                return tempnode
            print('Removing Node with 2 Children')
            tempnode=self.getpred(cur_node.left)
            cur_node.data=tempnode.data
            cur_node.left=self._remove(cur_node.data,cur_node.left)
        return cur_node
    def getpred(self,cur_node):
        if cur_node.right!=None:
            return self.getpred(cur_node.right)
        return cur_node

#INORDER TRAVERSAL

    def inorder(self):
        if self.root!=None:
            self._inorder(self.root)
    def _inorder(self,cur_node):
        if cur_node!=None:
            self._inorder(cur_node.left)
            print(cur_node.data)
            self._inorder(cur_node.right)

#PREORDER TRAVERSAL

    def preorder(self):
        if self.root!=None:
            self._preorder(self.root)
    def _preorder(self,cur_node):
        if cur_node!=None:
            print(cur_node.data)
            self._preorder(cur_node.left)
            self._preorder(cur_node.right)

#POSTORDER TRAVERSAL

    def postorder(self):
        if self.root!=None:
            self._postorder(self.root)
    def _postorder(self,cur_node):
        if cur_node!=None:
            self._postorder(cur_node.left)
            self._postorder(cur_node.right)
            print(cur_node.data)

#MINIMUM VALUE

    def minval(self):
        if self.root!=None:
            return self._minval(self.root)
    def _minval(self,cur_node):
        if cur_node.left!=None:
            return self._minval(cur_node.left)
        return cur_node.data

#MAXIMUM VALUE

    def maxval(self):
        if self.root!=None:
            return self._maxval(self.root)
    def _maxval(self,cur_node):
        if cur_node.right!=None:
            return self._maxval(cur_node.right)
        return cur_node.data

tree=binarytree()

tree.insert(100)
tree.insert(90)					#			 100
tree.insert(110)				#			/	\
tree.insert(95)					#          90   110
tree.insert(30)					#		  /  \
								#		30    95 
tree.remove(110)
tree.remove(90)

tree.inorder()
#tree.preorder()
#tree.postorder()

print(tree.minval())
print(tree.maxval())

Example 3: binary search tree insert java

public static Node insert(Node root, int x){
    if (root == null)
        return new Node(x);
    else if(x>root.getData())
        root.setRightChild(insert(root.getRightChild(),x));
    else
        root.setLeftChild(insert(root.getLeftChild(),x));
    return root;
}

Example 4: insert binary search tree

void BSNode::insert(std::string value) {

	if (this->_data == value) {
		_count++;
		return;
	}

	if (this->_data > value) {
		if (this->getLeft() == nullptr) {
			this->_left = new BSNode(value);
		}
		this->getLeft()->insert(value);
		return;
	}

	if (this->getRight() == nullptr) {
		this->_right = new BSNode(value);
		return;
	}
	this->getRight()->insert(value);
}