HackerRank Is This a Binary Search Tree? problem solution YASH PAL, 31 July 2024 In this tutorial, we are going to solve or make a solution of is this a Binary search Tree? problem. so here we have a pointer to the head or root node of a binary tree, and we need to determine if the binary tree is a binary search tree or not. Problem solution in Python programming. """ Node is defined as class node: def __init__(self, data): self.data = data self.left = None self.right = None """ def check(root, nodes_list): if root: if check(root.left, nodes_list) == 0: return False if len(nodes_list) != 0: if root.data in nodes_list or root.data < nodes_list[-1]: return 0 nodes_list.append(root.data) if check(root.right, nodes_list) == 0: return False def check_binary_search_tree_(root): nodes_list = [] if check(root, nodes_list) in [False, 0]: return False else: return True Problem solution in Java Programming. boolean checkBST(Node root) { return isBSTNode(root, Integer.MIN_VALUE, Integer.MAX_VALUE); } boolean isBSTNode(Node root, int min, int max){ boolean isBstNode = false; if(root == null){ return true; } if(root.data < min || root.data > max){ return false; } return (isBSTNode(root.left, min, root.data-1) && isBSTNode(root.right, root.data+1, max)); } Problem solution in C++ programming. /* Hidden stub code will pass a root argument to the function below. Complete the function to solve the challenge. Hint: you may want to write one or more helper functions. The Node struct is defined as follows: struct Node { int data; Node* left; Node* right; } */ bool checkBST(Node* root, int minValue, int maxValue) { if (root == NULL) { return true; } if (root->data < minValue || root->data > maxValue) { return false; } return ( checkBST(root->left, minValue, root->data - 1) && checkBST(root->right, root->data + 1, maxValue) ); } bool checkBST(Node* root) { return checkBST(root, 0, 10000); } coding problems data structure