Pal Infocom Technologies Interview Questions and Answers

Hacker rank question - easy and medium

Design solution for problems

Q1. Design a software for car ECU
Ans. 
Design a software for car ECU
• Identify the requirements and functionalities of the ECU

• Choose a programming language and development environment

• Implement the software to control the engine, transmission, and other systems

• Test the software for reliability and performance

• Ensure the software is secure and can handle errors and exceptions
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Q1. What are your strengths and weaknesses?
Ans. 
My strengths include strong leadership skills, excellent communication, and problem-solving abilities. My weaknesses include being overly critical of myself and sometimes taking on too much responsibility.
• Strength: Strong leadership skills

• Strength: Excellent communication

• Strength: Problem-solving abilities

• Weakness: Being overly critical of myself

• Weakness: Sometimes taking on too much responsibility
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Q2. Tell me about yourself.
Ans. 
I am an experienced professional with strong leadership skills and a proven track record in managing teams.
• Experienced professional with strong leadership skills

• Proven track record in managing teams

• Excellent communication and problem-solving abilities

• Ability to motivate and inspire team members

• Focused on achieving goals and delivering results
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Duration: 1Hour 30 Minutes, 2 Coding Questions of Total 175 Marks. 1st Question has 75 marks and 2nd Question has 100 marks.

Q1. 1. Find the smallestMissingNumber in given array using Bitwise OR operation alone 2. Based on Array data Manipulation.
Ans. 
Using Bitwise OR operation to find the smallest missing number in an array.
• Iterate through the array and perform Bitwise OR operation with each element to set corresponding bit in a bitmask

• Iterate through the bitmask to find the first unset bit, which represents the smallest missing number

• Example: Array [0, 1, 3, 4, 6] would have a bitmask of 10101, smallest missing number is 2
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Q2. Q2: Customized Data Extraction From Given Dynamic Array & Perform Some Math Operations On the Extracted Data
Ans. 
Extract data from a dynamic array and perform mathematical operations on it.
• Identify the dynamic array structure, e.g., ['12', '15', '20'].

• Convert string elements to integers for mathematical operations.

• Perform operations like sum, average, or product on the extracted data.

• Example: For array ['2', '3', '5'], sum = 2 + 3 + 5 = 10.

• Use built-in functions like map() for conversion and reduce() for aggregation.
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Q1. Write a Pseudo code for given scenario?
Ans. 
Pseudo code for a scenario
• Define variables and data structures needed

• Write the main logic using conditional statements and loops

• Handle edge cases and error conditions

• Test the pseudo code with sample inputs
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Q1. System Design & Design Pattern based questions
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Q1. Not Applicable (Yet to be scheduled)
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Q1. What your exp?
Ans. 
I have over 5 years of experience in software development, specializing in web applications and cloud technologies.
• Developed a full-stack web application using React and Node.js, improving user engagement by 30%.

• Led a team of 4 developers in creating a microservices architecture for a scalable e-commerce platform.

• Implemented CI/CD pipelines using Jenkins and Docker, reducing deployment time by 50%.

• Worked with Agile met...read more
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Q2. What is you total exp?
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Q1. Given a, b and target x, y , find if we can reach to x,y using a+b or a-b from a,b
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Q2. This was a sliding window problem where need to get the max , so you are give a pos in the x axis and there are items kept and you need to collect the max .
Ans. 
Maximize item collection using a sliding window approach on a 1D axis.
• Identify the range of positions on the x-axis where items are located.

• Use two pointers to represent the current window of positions being considered.

• Expand the right pointer to include more items until the window exceeds the desired range.

• Contract the left pointer to reduce the window size while maintaining the maximum sum of items.

• Keep track of the ...read more
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