Delphix Senior Software Engineer 2 Interview Questions and Answers

Data structure and aptitude

10 mins given for prepare for the problem and after completing the problem (program ) they asked to explain and asked to upgrade the program by reduce time complexity

Q1. Topic given and want to explain
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Q2. Reverse string without buildin funtion and for loop
Ans. 
Reverse a string without using built-in functions or for loops
• Use recursion to reverse the string

• Pass the substring excluding the first character to the recursive function

• Base case: return the character itself if the length of the string is 1

• Concatenate the last character of the string with the result of the recursive call
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Q1. Introduce your self
Ans. 
I am a passionate software developer with experience in Java, Python, and web development.
• Experienced in Java and Python programming languages

• Skilled in web development technologies like HTML, CSS, and JavaScript

• Worked on projects involving database management with SQL
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Q2. Are you ok with agreement
Ans. 
Yes, I am okay with agreement.
• I am comfortable with signing agreements related to software development projects.

• I understand the importance of agreements in protecting both parties involved in a project.

• I am willing to review and negotiate agreements to ensure they are fair and reasonable.
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Q1. SQL Questions - Constraints- how to optimize long SQL query without changing the output
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Q1. String related operations based on that they will ask you problems.
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Q2. State management knowledge will really help you to tackle this round.
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Q1. Questions related to NODEJS , PHP, Past projects, Resume
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Q2. Why Mongodb over Sql
Ans. 
MongoDB is preferred over SQL for its flexibility, scalability, and ease of use in handling unstructured data.
• MongoDB is a NoSQL database, making it easier to work with unstructured data compared to SQL.

• MongoDB is schema-less, allowing for more flexibility in data modeling and changes.

• MongoDB is horizontally scalable, making it easier to handle large amounts of data and high traffic loads.

• MongoDB's document-based data ...read more
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Q1. Promises in javascript
Ans. 
Promises in JavaScript are objects representing the eventual completion or failure of an asynchronous operation.
• Promises are used to handle asynchronous operations in JavaScript.

• They can be in one of three states: pending, fulfilled, or rejected.

• Promises can be chained using .then() to handle success and .catch() to handle errors.
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3 dsa questions were asked

Q1. Dsa questinsxare asked
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Q2. Coding in live anlong project explanation
Ans. 
Coding in live project involves writing and implementing code in a real-world software development project.
• Understand the project requirements and scope before writing any code.

• Collaborate with team members to ensure code integration and compatibility.

• Test and debug code to ensure it meets project specifications.

• Document code changes and updates for future reference.

• Follow coding best practices and guidelines to mainta...read more
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Q3. Nothing is asked in my 3rd question
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Q4. What does the following C++ code snippet do? int x = 5; while (x > 0) { cout << x << " "; x--; } Results in a compilation error Prints "54321" Prints "545454" Prints "12345"
Ans. 
Prints numbers from 5 to 1 separated by a space
• The code initializes x to 5, then enters a while loop that prints the value of x and decrements it until x is no longer greater than 0

• The output will be '54321'
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Q5. What will be the value printed to the console? #include void function(int arr[], int size) { for (int 10; 1 size; 1++) { arr[1] = 2; } int main() { int arr[] {1, 2, 3, 4, 5); function(arr, 5);...read more
Ans. 
The value printed to the console will be 246810.
• The function modifies the array elements to be 2.

• The main function calls the function to modify the array.

• The loop in main function prints the modified array elements.
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2 questions, Easy and medium based

Q1. Stacks queues and array questions
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Q1. Technical questions on projects
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Q1. How to tackle any uncertain situations? Behavioural questions
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