SDE - 1

You are given two Singly Linked Lists of integers, which may have an intersection point.

Your task is to return the first intersection node. If there is no intersection, return NULL.

Example:-

The Linked Lists, where a1, a2, c1, c2, c3 is the first linked list and b1, b2, b3, c1, c2, c3 is the second linked list, merging at node c1.

You are given an Integer ‘N’ you have to convert the integer to words.

For example you are given integer N = 2234 then you have to return the string “two thousand two hundred and thirty four”.

What are semaphores? 
Follow-up questions - 
What is critical section problem?
Code it with multithreading program. (i used java)
What is thread? What is process? Differences between them.

He choose my Android Project to have a indepth discussion (Android chat application using end-to-end encryption using AES).
He asked me to present the code, i opened android studio, with my screen being presented.
I explained the folder structure, and how everything is working, and how we are interacting with the database (Firebase).
Then he asked on what basis we are fetching the user list, and i also showed the data stored (in Firebase console).
Then he asked about the encryption part, why we are doing it.