HashedIn Interview Experience (On-Campus)

Difficulty Level: Medium

I want to share my interview experience for Hashedin. Hashedin Visited our college in September 2021.

Round 1: Online Coding Assessment

There were 3 coding questions.

1. Given a string s and integer k. We have to return the string having <= k characters of the string s from the beginning.

   Example: s="Codility We test coder" and k=14
   Output: "Codility We"

2. Given Two Arrays, return the number of occurrences of the fraction that appears most.

   Example: a={1,2,3,4} , b={2,3,6,8} 
   Output => 3 as (1/2=3/6=4/8}

3. Basically in this question we were given a function of O(n^2) complexity and our task was to make it O(n).

We got the result of this round after the next day. Out of 216 students, 18 were selected. I was one of them.

Round 2: Technical Round 1

In this round, the interviewer asked 2 coding questions and some basics of CS subjects (DBMS, OOPS, OS).

1. https://www.geeksforgeeks.org/dsa/find-triplets-array-whose-sum-equal-zero/
2. https://www.geeksforgeeks.org/dsa/count-distinct-pairs-with-given-sum/
3. What is indexing?
4. Difference between abstraction and encapsulation.
5. What is deadlock?
6. Banker's Algorithm
7. what is the Critical section and Semaphore?

We got the result on the same day. Out of 18 students, 10 were selected. I was also one of them.

Round 3: Technical Round 2

In this round, she asked some questions from System Design and 3 coding questions.

1. https://www.geeksforgeeks.org/dsa/word-break-problem-dp-32/
2. https://www.geeksforgeeks.org/dsa/reverse-a-linked-list/
3. https://www.geeksforgeeks.org/dsa/count-triplets-whose-sum-equal-perfect-cube/
4. Tell the difference between Linked list and Array that you have faced in your programming life.
5. What is ACID property?
6. Write the code for runtime polymorphism.
7. Tell me about OSI Model.

I was not selected after this round. But it was a great interview experience. The interviewers were very friendly throughout the whole interview process. After some days I got to know that 4 students were selected (final selection).

Tips:

1. Practice as many problems as you can from GeeksForGeeks, Leetcode, Interviewbit, etc.
2. Focus on your problem-solving skills.
3. Try to write optimized code.
4. Be Confident.