One Trust Associate Software Engineer Interview Questions and Answers

Q1. Two sum of an array
Ans. 
Find two numbers in an array that add up to a specific target value.
• Use a hashmap to store the difference between the target value and each element in the array.

• Iterate through the array and check if the current element's complement exists in the hashmap.

• Return the indices of the two numbers that add up to the target value.
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Q2. Stack balance parenthesis
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Q1. Is circular loop is there in a linkedList
Ans. 
No, a circular loop is not present in a linked list.
• A linked list does not have a circular loop by default.

• If a linked list has a circular loop, it is considered a circular linked list.

• Circular linked lists can be detected using Floyd's Cycle Detection Algorithm.
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Q2. How to identify the duplicates in circular linkedList
Ans. 
To identify duplicates in a circular linked list, use a hash set to keep track of visited nodes.
• Traverse the circular linked list while adding each node to a hash set.

• If a node is already in the hash set, it is a duplicate.

• Consider edge cases such as an empty list or a list with only one node.
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5 coding questions you have to complete atleast 4

Q1. About yourself and technology related questions ,it can 1 or 1 and half an hour round
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Basic aptitude questions

Time and Speed, Percentages, Averages, Ratio and Proportion, Time and Work etc.

Platform was Mettle Assessment, Topics were Tree and Binary Search

Work from office vs Work from Home

Q1. Multi-threading, Communication between thread, dynamic programming, trees, sorting techniques.
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Q2. What is TCP, UDP, Difference between TCP and UDP, Three way handshaking problem, socket programming, HTTP Protocol.
Ans. 
TCP (Transmission Control Protocol) and UDP (User Datagram Protocol) are protocols used for data transmission over networks.
• TCP is a connection-oriented protocol that guarantees reliable delivery of data.

• UDP is a connectionless protocol that does not guarantee reliable delivery of data.

• The main difference between TCP and UDP is that TCP provides reliable, ordered, and error-checked delivery of data, while UDP does not.

• ...read more
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Q3. Write code to print bottom view of Binary Search Tree
Ans. 
Print the bottom view of a Binary Search Tree.
• Use a map to store the horizontal distance and the bottom-most node at that distance.

• Traverse the tree in level order and update the map with each node's horizontal distance and level.

• Print the nodes in the map in ascending order of their horizontal distance.
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Q1. Why you want to work from office
Ans. 
I believe working from the office allows for better collaboration and communication with colleagues.
• Better collaboration and communication with colleagues

• Opportunity for face-to-face interactions

• Easier access to resources and equipment

• Faster problem-solving through immediate discussions

• Building stronger relationships with team members
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Q2. Why should we hire you
Ans. 
I have the technical skills, experience, and passion for software engineering that make me a valuable asset to your team.
• I have a strong background in computer science and software development

• I have experience working on various software projects and have a proven track record of delivering high-quality code

• I am a quick learner and can adapt to new technologies and programming languages

• I am a team player and can effect...read more
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Q3. Tell any moment when you felt motivated and depressed at same time. etc
Ans. 
Yes
• When I received a promotion at work but also had to deal with the loss of a loved one

• When I achieved a personal goal but also faced criticism from others

• When I received positive feedback on a project but also experienced imposter syndrome
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First round was coding test conducted by their IDE where you can program in any language like on hackerrank IDE . 5 question were asked from easy to hard

Q1. They ask me about my though on social media
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Q2. They give me a situation to handle the work load
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Q1. Difference between stack and heap ?
Ans. 
Stack is used for static memory allocation and stores local variables, while heap is used for dynamic memory allocation and stores objects.
• Stack memory is allocated in a contiguous block and is faster to access compared to heap memory.

• Variables stored on the stack have limited scope and lifetime, while objects on the heap can persist beyond the scope of the function.

• Stack memory is managed by the compiler, while heap m...read more
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Q2. Difference between complier and interpreter ?
Ans. 
Compiler translates entire code into machine code before execution, while interpreter translates code line by line during execution.
• Compiler translates entire code into machine code before execution

• Interpreter translates code line by line during execution

• Compiler generates error messages after scanning entire code

• Interpreter stops at first error encountered

• Examples: C, C++ use compilers; Python, Ruby use interpreters
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Q1. My introduction
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Q2. I can i mange to work proficiency
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Coding content on hackerrank of 2 questions

Q1. I had virtual interview with the technical team member who asked all the questions starting from basic to the higher level covering all the skills mentioned in the resume and has provided with scenarios to...read more
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