Unthinkable Solutions Interview Experience | On-Campus 2021
Coding Round: This round consists of three coding questions 2 easy and 1 hard
- Find the number of substring that are consecutive alphabetically in a string (easy);
- A rotated sorted array is give you have to find the minimum no of right shift operation so that the array is completely sorted. (easy)
- https://leetcode.com/problems/maximal-rectangle/ (hard)
i was able to do all the questions hence directly qualified for interview round
Technical Interview Round 1: Duration 1 hour
- Tell me about yourself.
- Few questions from project he did not go into detail.
Data Structures Questions:
- What is Hashing, Heapify?
- Difference between array and linked list
- Write down the phases of the software development life cycle
- Difference between recursion and dynamic programming
DBMS Questions
- Why do we use dbms,
- What is left join, why it is used.
Two queries of SQL
- He given me a database and asked to print the top 100 employees whose name start with a
- One query on natural join
Coding Questions
- Write the code to find second maximum element in an array ( i have told him all the approach brute force ,better and optimal)
- Write a code to print a linked list
- Find the power (a,n) in log(n) time.
- Write the code to check whether a number is armstrong or not(only for three digit number).
Puzzle Round:
- You are in a well that is 60 m deep in one day you climb 5m up and fall 3 m down after how many you will get out of the well
- You are in a well which is 60 m deep in one day you climb 5m up and the next day you all 3 m down in this way after how many days you will get out of the well
I was not able to give answer of two questions but selected for 2nd technical interview
Technical Interview Round 2: Duration 50 minutes
- Tell me about yourself
- Then he asked from the project this time he asked tough questions from project
- Difference between bfs and dfs which one is better for a binary tree
- Write the code of level order traversal of binary tree
- Tell real life example of circular array
- Which algorithm is used in ola uber
Puzzle Questions
- Select one word from (red woon)
- Select the odd one out from , First , second , third , forth , fifth , sixth , seventh ,eight
- Using numbers 1,2,6 7 you have to make 17 you can use operators +,-, *,/ but cannot repeat any operator or operand
- There are 25 horses ,conditions are maximum 5 horses can run in a race and you will get only one winner from it. you have to calculate minimum number of races from which you can get top three fastest horses
- You have given four bowls 12L, 8L, 5L and 1L . the 12 L bowl is complety filled with milk how will you transfer milk between the bowls so that at last 12L ,8L , 5L bowls all have 4L of milk in them
- You have given two sand glass one filled in 4 min and other in 7 min you have to tell when nine minute will occur
I was not able to answer 3 questions but selected for hr round
HR Round:
- Tell me about your family
- Any internships or certifications you have done
- Tell me about project
- Your favourite subject in school and college why they are you favourite subject
- What is your area of interest i told that software development but then he made me confuse by asking why software development and some more question I was not able to recall but here and i got confused very badly
- Next 3 year goal
- Why do you want to join unthinkable
- What do you know about unthinkable ( this question was asked to me 3 times he did not satisfied with my answer)
- Then he tell me about package ,company allowance , internship period, salary, daily timing ,holidays and so many basic things
Then my HR round finished
My HR round had not gone well i was not able to answer any question confidently now i am waiting for my result.
Thank you
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