#Coding

The array cannot be modified. Size = N + 1, values range from 1 to N. Find any duplicate. Time Complexity: O(N), Space Complexity: O(1). Example: Input: {10,1,2,3,5,4,9,8,5,6,4} → Output: 5

You are given the head of a linked list and an integer array nums. Return the number of connected components formed by nodes whose values appear in nums. Example: Input: head = [0,1,2,3], nums = [0,1,3] → Output: 2

Answer a series of input/output-based questions related to JavaScript.

Thoroughly explain the code written in Part A of the Hackathon and make the solution thread-safe, avoiding standard library thread safety mechanisms.

Debug your code live and make it compile successfully.