Lam Research Software Developer Interview Questions and Answers

General aptitude questions

Problem solving, solved 2 out of 3 questions

General topics were given in gd

Q1. Programming concepts
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Q2. Projects and coding round questions solved
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Its basically a test comprising 32 mcq
12- logical reasoning
20- core C,DBMS, OS , Computer Networks

2 coding Questions

Q1. He just Gave me to design a React Page and removed all the starting code and gave me blank folder and asked to code all by myself
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Q2. He asked me SQL queries which was quite tough as its of nested queries
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Q1. Tell me about yourself
Ans. 
I am a passionate software developer with experience in Java, Python, and web development.
• Experienced in Java, Python, and web development technologies

• Strong problem-solving skills

• Team player with excellent communication skills
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Q2. What was malloc
Ans. 
malloc is a function in C programming used to dynamically allocate memory during runtime.
• malloc stands for 'memory allocation'.

• It is used to allocate a specific amount of memory during program execution.

• The allocated memory is not automatically initialized and must be explicitly freed using the free() function to avoid memory leaks.
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Medium coding qs with technical interview

Q1. Reverse an array
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Q1. Count freq of elements in array
Ans. 
Count frequency of elements in array of strings
• Iterate through the array and use a hashmap to store the frequency of each element

• Use a for loop to go through each element and update the count in the hashmap

• Return the hashmap with element frequencies
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Q1. 5-10 Questions on Javascript concepts
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Q2. 2-3 medium level array coding questions
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Q3. 2 logical questions
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Q1. Friendly Communication
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Q1. One Leetcode medium level coding question
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Q2. Questions from your skills and the projects you have done so far
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1st round is combination of aptitude and technical mcqs

Q1. Tell me about ur projects
Ans. 
I have worked on various projects including a web-based inventory management system and a mobile app for tracking fitness goals.
• Developed a web-based inventory management system using React and Node.js

• Created a mobile app for tracking fitness goals using Flutter

• Collaborated with a team to implement new features and fix bugs in existing projects
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Q2. Tell me about two sum code in python
Ans. 
Two sum code in Python finds two numbers in an array that add up to a specific target.
• Use a dictionary to store the difference between the target and each element in the array.

• Iterate through the array and check if the current element's complement is in the dictionary.

• Return the indices of the two numbers that add up to the target.
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