Ruhani Industries Interview Questions and Answers

Round: Walk in
Experience: Initial shortlist was Walk-In.

Round: Technical Interview
Experience: Duration: 50 mins.
Resume based.

General Tips:  Have a good number of projects and know each and every aspect of the projects mentioned
 Have the ability to relate course content to the project development
Skill Tips: They were looking for Product Designers.
College Name: IIT-Madras

Round: Test
Experience: This was a simpler round, concentrating on basic questions like-
1. Deleting last 'n' nodes of a linked list
2. Check out the given tree is a BST or not.
3. If an array a[i] is a then a[i+1] would be either a+1, a-1 or a so in this array how do you search an element
4. write a ship quality code
Total Questions: Online

Round: Test
Experience: The questions were of this type-


1. Given a tree and all the leaf nodes form a double linked list ( complete tree is given ). How do you find the height of the tree?
2. an array of negative and positive numbers are given. find all contiguous subsets whose sum is equal to zero.

Round: Test
Experience: The difficulty level went up, with questions like-


1. Find Longest Increasing sequence subject to some constraints.
2. An array is given of size n and the elements are in the range 1 to n. Some elements are missing and some are repeated. Find the missing elements and find frequency of all the repeated elements.
3. Three arrays A, B, C. find subset a in A, b in B, c in C such that a + b + c = 0

Round: Test
Experience: Really tough test, with questions like-


1. A tree is given, make a linked list of leaves.
2. for amazon online store what data-structure is used. That is hierarchical structure
3. Asked about make file. How do you club into a single object file.

General Tips: Before making the shortlist, you'll have to sit for an Online written test. The test consists of two parts.
One part will concentrate on aptitude and output of C programs.
1. aptitude, 2. C aptitude, 3. Operating Systems and Time complexities etc.,
Second part will be coding Questions
1. One Question on Trees - definitely
2. One more simple questions on string manipulation
Skills: Algorithms, Puzzles, Data Structures
College Name: IIT ROORKEE

Round: Resume Shortlist
Experience: I had sent my resume to the hiring group, Selection through telephonic interviews. I was interviewed by three different research groups  (once by each).
Tips: Factors in decreasing order of importance: CGPA each stage. Ability to explain your projects precisely. Ability to solve ''standard" logarithmic problems.  The way you think and put down your Answer is the most important. The final answer .s not so I important, and they prod you when you think out aloud anyway.

Round: Technical Interview
Experience: Almost- by default they ask about your previous projects/internships if they are relevant to the group. Ofher questions depend on the group you are interviewed by and your own profile, In my case it was machine learning, text mining etc. I was told about the research problem they were dealing with then and asked f or comments/suggestions/.inputs and a discussion followed.
Tips: Basically these are specialized Interviews so it's good to have sound knowledge of your domain (analytical and application skills are very much required).

Skill Tips: CGPA>9.0, 1f not (like me) relevant work done in the domain and in past internship.A recommendation from the professor is also a good add on.
College Name: IIT Madras