Editorialist YX Sdet Automation Test Engineer Interview Questions and Answers

This round has 3 coding questions mostly based on graph and trees

Q1. A lockable tree problem
Ans. 
Design a data structure for locking/unlocking nodes in a binary tree efficiently.
• Implement a lockable tree data structure with lock(), unlock(), and isLocked() methods.

• Ensure a node can only be locked if all ancestors are unlocked and all descendants are locked.

• Optimize the operations for efficiency.

• Consider using a flag in each node to track its locked status.

• Use a recursive approach to check locking conditions.

• Mainta...read more
Answered by AI
Add your answer
Q2. OS level improvements in above problem
Ans. 
Improving the operating system can enhance performance and efficiency of the system.
• Optimizing memory management to reduce overhead

• Implementing better scheduling algorithms to improve multitasking

• Enhancing file system performance for faster data access

• Improving network stack for better communication speed
Answered by AI
Add your answer

Q1. Valid parenthesis
Add your answer
Q2. Generate parenthesis
Ans. 
Generate all valid combinations of parentheses
• Use backtracking to generate all valid combinations

• Keep track of the number of open and close parentheses used

• Add open parenthesis if there are remaining open parentheses, add close parenthesis if there are more open than close parentheses
Answered by AI
Add your answer

Leetcode style of coding

Easy questions but less time

2 easy and 1 hard leet code

Q1. Reverse the link list
Ans. 
Reverse a linked list
• Iterate through the linked list and reverse the pointers

• Use three pointers - prev, current, next to reverse the links

• Update the head of the linked list to the last node after reversing
Answered by AI
Add your answer
Q2. The Hanoi tower problem was given
Add your answer
Q3. One DP question was given to explain not write
Add your answer

Q1. JEE rank and previous paid internship
Add your answer

Q1. What is difference between Selenium WebDriver Selenium RC?
Add your answer
Q2. WebDriver is faster and more efficient than RC.
Add your answer

There were three questions from graph

Q1. One Dp related question
Add your answer
Q2. Question related to projects
Add your answer

Basic dsa level 1 can be prepared from toutube

Take home assignment can be done easily

Q1. Basic hr round intro
Add your answer
Q2. Why to join and culture fit
Ans. 
I am passionate about the company's mission and values, and I believe my skills and experience align well with the team's culture.
• I am excited about the opportunity to work with a team that values collaboration and innovation.

• I appreciate the company's commitment to diversity and inclusion, and I believe I can contribute to creating a positive and inclusive work environment.

• I am impressed by the company's focus on cont...read more
Answered by AI
Add your answer