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Code is not working in Java Language. 

Showing “Run Time Error” 

Exception in thread  main  java.lang.NullPointerException at Runner.takeInput(Runner.java:26) at Runner.main(Runner.java:56)

Anybody else facing this issue today?

bool searchInBST(BinaryTreeNode<int> *root, int x) {

        // base case:

        if (root == NULL) {

            return NULL;

        }

        if (x == root->data) {

            return root;

        }

        else if (x > root->data) {  

        // right part insertion:

            return searchInBST(root->right, x);

        }

        else {

        // left part insertion:

            return searchInBST(root->left, x);

        }

        return root;

}

TreeNode<int>* insertionInBST(TreeNode<int>* root, int val)

{

    // base case:

        if (root == NULL) {

            root = new TreeNode<int>(val);

            return root;

        }

        if (val > root->val) {  

            // right part insertion:

            root->right = insertionInBST(root->right, val);

        }

        else {

            // left part insertion:

            root->left = insertionInBST(root->left, val);

        }

        return root;

}

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Hey, I have shared my campus interview experience with Mphasis for Associate Software Engineer.

Hope this helps!

Interview experience link with approach