Creating a List of Elite Football Clubs in a Nation

The editor of a sports magazine must compile a list of elite football clubs in a specific nation. This requires sending HTTP GET requests to access a football club database via the following URL:

API URL:

https://jsonmock.hackerrank.com/api/football_teams?nation={nation_name}

The database provides the estimated monetary value of each club, referred to as its valuation. Since the query result is paginated, additional pages can be accessed using the query parameter &page={num}, where num represents the page number.

API Response Fields

The API response contains the following fields:

• page: The current page number.
• per_page: The maximum number of results per page.
• total: The total number of records.
• total_pages: The total number of pages for the query.
• data: An array of JSON objects, each containing football club details.

Data Fields in Each Club Object

Each JSON object within the data array includes the following details:

• name: The name of the club.
• nation: The nation in which the club plays.
• estimated_value_numeric: The club's monetary valuation.
• number_of_league_titles_won: The number of league titles won by the club.
• Other details: Additional fields that are not relevant to this question.

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Determining Presence of Values in a Binary Search Tree

Description

In a binary search tree (BST), each node contains a value and references to up to two child nodes: left and right. The root node has no ancestors. The left and right children represent subtrees. The BST property dictates that:

• Values in the left subtree of a node must be less than the node's value.
• Values in the right subtree of a node must be greater than or equal to the node's value.

This property enables efficient searching in the BST.

Function Description

Complete the function:

isPresent

This function takes the following parameters:

• BSTreeNode root: A reference to the root node of an integer BST.
• int val[q]: An array of integers to search for in the BST.

Returns:

• int[q]: An integer array where each value at index i is:
  • 1 if val[i] is present in the BST.
  • 0 otherwise.

Constraints:

• 1≤n,q≤1051 \leq n, q \leq 10^5
• 1≤val[i]≤5×1041 \leq val[i] \leq 5 \times 10^4

Code Snippet for Reference (Java)

import java.io.*;

private static int isPresent(Node root, int val) {
    // For your reference
    class Node {
        Node left, right;
        int data;
        Node(int newData) {
            left = right = null;
            data = newData;
        }
    }
}

This function checks if a list of integer values exists in a given BST, returning a corresponding list of 1s and 0s.

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