Optiver Interview Questions and Answers

The question asks to construct a k-ary tree using the given k and DFS traversal string.

• Iterate through the DFS traversal string

• If the current character is 'P', create a parent node

• If the current character is 'L', create a leaf node

• Link the nodes according to the DFS traversal order

To determine if a graph has a node with n degree, iterate through all nodes and count their edges.

• Iterate through each node in the graph

• Count the number of edges connected to each node

• If any node has n edges, then the graph has a node with n degree

Yes, I had a delicious sandwich and some fruit for lunch.

• I had a sandwich and fruit for lunch

• It was delicious

• I ate around noon

I am a highly motivated individual with a passion for problem-solving and continuous learning.

• I have a degree in Computer Science and have worked as a software developer for 3 years.

• I am proficient in multiple programming languages including Java, Python, and C++.

• I have experience working in both Agile and Waterfall methodologies.

• I am a team player and enjoy collaborating with others to achieve common goals.

• In my free ...read more

Inner join, outer join, and left outer join are types of SQL joins used to combine data from multiple tables.

• Inner join returns only the matching rows from both tables

• Outer join returns all rows from both tables, with null values for non-matching rows

• Left outer join returns all rows from the left table and matching rows from the right table

• Joins are used to combine data from multiple tables based on a common column

• Exam...read more

Developed a web-based project management tool for a software company

• Used Agile methodology to develop the tool

• Implemented features such as task assignment, progress tracking, and team collaboration

• Designed a user-friendly interface with responsive design

• Integrated with third-party tools such as JIRA and Slack

• Received positive feedback from the client and increased team productivity

I recently studied the impact of social media on mental health.

• Explored the correlation between social media usage and depression/anxiety

• Researched the effects of cyberbullying on mental health

• Analyzed the role of social media in promoting positive mental health

• Reviewed studies on the impact of social media on self-esteem and body image

It was a busy day filled with meetings and deadlines.

• Had multiple meetings with clients and team members

• Worked on completing a project before the deadline

• Managed to finish all tasks on time

Yes, the interviewers were very nice and welcoming.

• The interviewers greeted me warmly and made me feel comfortable.

• They asked questions in a friendly and conversational manner.

• They were attentive and engaged throughout the interview.

• Overall, I had a positive experience with the interviewers.

Yes, I am prepared for 5-6 more interviews.

• I have already gone through multiple interviews and have gained experience.

• I have researched the company and the position thoroughly.

• I have prepared answers to common interview questions.

• I am mentally and physically ready for the interviews.

• I am excited for the opportunity to showcase my skills and qualifications.

I appreciated the clear and concise presentation of information.

• The use of visuals helped to illustrate key points effectively.

• The organization of the slides made it easy to follow along.

• The inclusion of data and statistics added credibility to the presentation.

• The overall design was professional and visually appealing.

I have achieved several milestones in my career, including increasing sales revenue by 20% and leading a successful project team.

• Increased sales revenue by 20% through effective marketing strategies

• Led a successful project team that delivered a new product on time and within budget

• Received Employee of the Year award for outstanding performance and dedication

• Developed and implemented a new customer service program that ...read more

I struggled to adjust to the new academic environment and workload in my first year.

• Transitioning from high school to college can be challenging

• I had to learn new study habits and time management skills

• I sought help from tutors and professors to improve my grades

I tend to overthink, struggle with time management, and can be too self-critical.

• Overthinking can lead to analysis paralysis and slow decision-making

• Time management can be improved through prioritization and delegation

• Self-criticism can hinder confidence and productivity

I don't have the available data.

Nomura is a leading global financial services firm with a strong reputation and diverse range of opportunities.

• Nomura has a strong reputation in the financial services industry

• Nomura offers a diverse range of opportunities for career growth

• Nomura has a global presence with offices in over 30 countries

• Nomura values diversity and inclusion in its workforce

• Nomura has a strong commitment to corporate social responsibility

I would rate myself 8 in Java and 7 in database.

• I have extensive experience in Java programming and have worked on multiple projects using it.

• I am proficient in database management and have worked with various database systems like MySQL and Oracle.

• I am constantly learning and improving my skills in both Java and database management.

• I have also completed relevant courses and certifications to enhance my knowledge in th

SDLC stands for Software Development Life Cycle. It is a process followed by software development teams to design, develop and test high-quality software.

• The phases of SDLC are Planning, Analysis, Design, Development, Testing, Deployment, and Maintenance.

• Planning involves defining the project scope, goals, and objectives.

• Analysis involves gathering and analyzing requirements.

• Design involves creating a detailed design o...read more

I would like to work in the second phase as it involves implementation and execution of plans.

• I prefer to work in the second phase as it is more action-oriented and involves putting plans into action.

• The second phase is where the actual work happens and I enjoy being a part of the execution process.

• Working in the second phase allows me to see the results of my efforts and make necessary adjustments.

• For example, if I am...read more

I am a quick learner with excellent problem-solving skills and a strong work ethic.

• Quick learner

• Excellent problem-solving skills

• Strong work ethic