Can you describe your experience with different testing methodologies, such as manual testing, automation testing, and regression testing? How do you prioritize test cases and decide which areas of the software to focus on for testing? What testing tools and frameworks are you proficient in, and how have you used them in your previous roles? Can you share an example of a particularly challenging bug you discovered and how you resolved it? Explain the importance of test documentation and test plans in the QA process. How do you collaborate with developers and other team members to ensure the delivery of high-quality software? Describe your approach to creating test cases and test data for a complex software application. Have you worked with any specific test management or bug tracking tools (e.g., JIRA, TestRail)? Can you discuss your experience with these tools? How do you stay updated on the latest QA trends and best practices in the industry? Provide an example of a situation where you had to handle tight deadlines or changing requirements. How did you adapt to ensure software quality? What is your process for conducting regression testing, and why is it crucial in the QA process? Describe your experience with test automation, including the scripting languages and frameworks you've used. Can you share your experience with performance testing or security testing, if applicable? Discuss a time when you had to handle a disagreement or conflict within your QA team or with developers. How did you resolve it? What do you think are the key qualities that make a successful QA engineer, and how do you embody them?

1. Design a data structure that insert, remove, search and get random element all in O(1) time. 2. Design a bidirectional map using the generics.