Dassault Systemes Automation Test Specialist Interview Questions and Answers

Data Structure related questions

Q1. Java related interview questions
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Round duration - 120minutes
Round difficulty - Easy

It was an online MCQ's + coding round consisting of 20 MCQ’s and 1 coding problem.

Q1. Check whether there exists a loop in the linked list.
Ans. 
Check for a loop in a linked list by using two pointers moving at different speeds.
• Use two pointers, one moving at double the speed of the other.

• If there is a loop, the two pointers will eventually meet at the same node.

• Example: 1 -> 2 -> 3 -> 4 -> 5 -> 2 (loop back to 2), the two pointers will meet at node 2.
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Round duration - 50 minutes
Round difficulty - Easy

The interview started at 8:30 pm in cc of Delhi Technological University itself and it was quite late. There was only a single interviewer and he asked me one coding question related to overflow of integers.

Q1. How can you check for integer overflow when multiplying two integers and ensure the result is stored correctly within an integer type?
Ans. 
To check for integer overflow when multiplying two integers, use the properties of integer overflow and check if the result is within the valid range of the integer type.
• Check if the signs of the two integers are the same to avoid overflow in case of multiplication.

• Use the properties of integer overflow to detect if the result exceeds the maximum or minimum value of the integer type.

• Consider using a larger data type or...read more
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Round duration - 15 minutes
Round difficulty - Easy

It was quite late . There was only one interviewer and I was asked about my family , education and future plannings and few questions related joining locations and documents etc.

Q1. Tell me about yourself and your family.
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Q2. Tell me about your educational background.
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Round duration - 60 minutes
Round difficulty - Medium

Q1. 
Find All Anagrams Problem Statement
Given a string STR and a non-empty string PTR, identify all the starting indices of anagrams of PTR within STR.
Explanation:
An anagram of a string is another string ...read more
Ans. 
Given a string STR and a non-empty string PTR, find all starting indices of anagrams of PTR within STR.
• Create a frequency map of characters in PTR.

• Use sliding window technique to check anagrams in STR.

• Return the starting indices of anagrams found.
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Q2. 
Subset Sum Problem Statement
Given an array of integers, find the sum of all subsets in non-decreasing order of the given array.
Example:
Input:
N = 3, array = [1, 2]
Output:
[0, 1, 2, 3]
Explanatio...read more
Ans. 
Find sum of all subsets in non-decreasing order of given array.
• Use recursion to generate all subsets of the array

• Calculate sum of each subset and store in a list

• Sort the list in non-decreasing order to get the final result
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Round duration - 60 minutes
Round difficulty - Medium

First he asked me to tell about myself, then he asked me some OOPS Concepts,difference in shallow copy and deep copy,
asked me to write a code for boundary traversal of binary tree.

Q1. 
Boundary Traversal of Binary Tree Problem Statement
Given a binary tree consisting of integers, your task is to provide the boundary nodes of this tree in an anti-clockwise direction, starting with the ro...read more
Ans. 
Boundary traversal of a binary tree to find left boundary, right boundary, and leaf nodes in an anti-clockwise direction.
• Perform a pre-order traversal to get the left boundary nodes

• Perform an in-order traversal to get the leaf nodes

• Perform a post-order traversal to get the right boundary nodes

• Combine the results to get the boundary nodes in anti-clockwise direction
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Round duration - 60 minutes
Round difficulty - Easy

The second tech interview lasted for about an hour and half. First he asked me to tell about myself. Then he asked me how my first interview was. He then asked me where should I start, data structures, databases, to which I replied anywhere.
He started asking questions about C. He asked difference between call by pointer and call by reference. Whether a function can be defined as
void function(int &x, int &y);
Then he asked what is volatile data type in C. Then about the static data class.
He also asked me to write a program to find length of a string.
Then he asked about how functions in C work. How does the program know where to go back after a function is over, etc.
He then asked me if I knew C++, I said no. So he continued to ask a few questions on data structures.
He then asked about the ACID properties which a good database must have. He asked how are transactions managed by a database, what are commits, how, in case of a power failure, data is reverted back, etc.
Then he asked me whether I like to work individually or in a team. I said in a team. He then gave me scenario where I have to decide between a project I am working on, whose deadline is approaching, and helping a friend working on another project whose deadline is also approaching, and asked me what would I do in such a case.

Q1. 
Find the Middle of a Linked List
This problem requires you to return a pointer that references the middle node of a singly linked list.
Explanation:
If the number of elements in the linked list is odd, ...read more
Ans. 
Return the middle node of a singly linked list, considering odd and even number of elements.
• Traverse the linked list with two pointers, one moving twice as fast as the other

• When the fast pointer reaches the end, the slow pointer will be at the middle

• Return the node pointed to by the slow pointer as the middle node
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Process for freshers-

Go through RS Agarwal book and be ready for logical reasoning questions

Criteria for selection is 75% so make sure to select right ans

There will be 2 questions based on selected language

And questions on general English.

Q1. Technical round will based on mentioned language in resume. My round was on Java language. So prepare the basic of Java and advance Java some time they ask you to write some syntax so prepare those synta...read more
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Q1. It's formality round Just present your self well Be ready to reallocate any where they want. You can ask some question about the work culture in company.
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