I contacted the company through a recruiter, and the process took two to three weeks.

Initially, I was given a coding exercise. After that, I was asked to schedule a technical phone call interview with a highly experienced person in the company. He was very supportive throughout the interview.

1. I have a Java program that uses many HashMap/HashTable instances for mapping key-value pairs. I want to profile or count how many times the get() and put() methods are called within my program.

2. Given a stream of integers, store N unique numbers with insert, search, and retrieve operations in O(1) complexity. If the maximum space is reached, remove old data and insert new data. Perform this using a data structure.

3. Given a number N, write a program to find the count of prime numbers in the range of 1 to N.