Walker Digital Table Systems Senior Software Developer Interview Questions and Answers

Q1. 2 sum in array
Ans. 
The Two Sum problem involves finding two numbers in an array that add up to a given target value.
• Iterate through the array and store the difference between the target and current element in a hashmap

• Check if the current element exists in the hashmap, if yes return the indices

• Time complexity can be reduced to O(n) using a hashmap
Answered by AI
Add your answer
Q2. Reverse a linked list
Ans. 
Reverse a singly linked list and return the reversed list.
• Iterate through the linked list and reverse the pointers to point to the previous node instead of the next node.

• Use three pointers to keep track of the current, previous, and next nodes while reversing the list.

• Update the head of the list to be the last node after reversing.
Answered by AI
Add your answer
Q3. In given time slots , find conflicting time slots
Add your answer

Q1. Asked about projects
Add your answer
Q2. Longest palindrome
Ans. 
Find the longest palindromic substring in a given string.
• Iterate through each character in the string and expand around it to find palindromes

• Use dynamic programming to optimize the solution

• Consider both odd and even length palindromes
Answered by AI
Add your answer

Q1. Strecture of sql statement
Ans. 
SQL statements are used to interact with databases by performing operations like querying, updating, and deleting data.
• SQL statements are made up of keywords like SELECT, INSERT, UPDATE, DELETE, etc.

• They are structured in a specific order, with clauses like WHERE, ORDER BY, GROUP BY, etc.

• Tables are referenced using their names, and conditions are specified to filter data.

• Joins can be used to combine data from multiple
Answered by AI
Add your answer

Multiple choice questions and depends on therotical part

Q1. What is Software testing?
Ans. 
Software testing is the process of evaluating a software application or system to identify defects or errors.
• Software testing is essential to ensure the quality and reliability of software.

• It involves executing test cases and comparing the actual results with expected results.

• Testing can be done manually or using automated tools.

• Types of testing include functional, performance, security, and usability testing.

• Examples ...read more
Answered by AI
View 1 more answer

Q1. Salary discussion
Add your answer

Q1. Automation testing with testing tools
Ans. 
Automation testing with testing tools involves using software to execute tests and compare actual results with expected results.
• Automation testing saves time and effort compared to manual testing

• Testing tools like Selenium, Appium, and TestComplete are commonly used for automation testing

• Automation testing can be used for regression testing, load testing, and performance testing

• Automation testing requires programming s...read more
Answered by AI
Add your answer
Q2. Integration with automation Devops process
Ans. 
Integration with automation DevOps process is crucial for efficient software testing.
• Automation testing tools can be integrated with DevOps tools like Jenkins, Git, and Docker.

• Continuous integration and continuous delivery (CI/CD) pipelines can be set up for automated testing.

• Test cases can be triggered automatically with each code commit or deployment.

• Test results can be reported back to the development team for quick...read more
Answered by AI
Add your answer

Q1. Questions was based on SQL
Add your answer
Q2. SQL queries and joins and
Add your answer

Easy Level DS Questions - 30 mins

Q1. Cloud Services related questions
Add your answer
Q2. ETL Based question
Add your answer

A comprehensive coding test which included job role simulation.

Advanced Cloud Services questions

Q1. Introduce yourself
Ans. 
I am a Senior Software Developer with 8 years of experience in full-stack development, specializing in Java and Angular.
• 8 years of experience in full-stack development

• Specialize in Java and Angular

• Strong problem-solving skills

• Experience working in agile environments
Answered by AI
Add your answer
Q2. Why did you leave your last organisation
Add your answer

Q1. More than technology,a senior recruiter asks where you stay which gali you stay,which temple is near by,what your husband do,getting into more personal and final he will ask your janam kundali and tell you...read more
Add your answer

Q1. Senior recruiter will ask more personal questions
Add your answer