PNG Jewellers Interview Questions and Answers for Experienced

Q1. How do you think you can contribute to the company?
Ans. 
I can contribute to the company by utilizing my skills and experience to improve processes and achieve goals.
• I have experience in project management and can help streamline workflows

• I am skilled in data analysis and can provide insights to improve decision-making

• I am a quick learner and can adapt to new technologies and tools

• I am a team player and can collaborate effectively with colleagues

• I am committed to delivering
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Q2. How are you planning to get clients
Ans. 
I plan to get clients through networking, social media, and targeted advertising.
• Attending industry events and conferences to meet potential clients

• Utilizing LinkedIn and other social media platforms to connect with potential clients

• Creating targeted ads on social media and search engines to reach potential clients

• Asking for referrals from current clients

• Offering promotions or discounts to attract new clients
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Round duration - 90 minutes
Round difficulty - Medium

Total of 8 questions:

4 MCQ(oops and expected output type questions) + other 2 were coding questions, out of which one is some class implementation question.

Q1. 
Count Subarrays with Sum Divisible by K
Given an array ARR and an integer K, your task is to count all subarrays whose sum is divisible by the given integer K.
Input:
The first line of input contains an...read more
Ans. 
Count subarrays with sum divisible by K in an array.
• Iterate through the array and keep track of the running sum modulo K.

• Use a hashmap to store the frequency of remainders.

• For each prefix sum, check how many previous prefix sums have the same remainder.

• Return the total count of subarrays with sum divisible by K.
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Round duration - 60 minutes
Round difficulty - Easy

This round was with the USA team, the panel consisted of 2 members. It took place at around 9 PM IST. The interviewer's focus was on approach.

Q1. 
Sort an Array in Wave Form
You are given an unsorted array ARR. Your task is to sort it so that it forms a wave-like array.
Input:
The first line contains an integer 'T', the number of test cases.
For ea...read more
Ans. 
Sort an array in a wave-like pattern where each element is greater than or equal to its adjacent elements.
• Iterate through the array and swap elements at even indices with their adjacent odd indices to form a wave pattern.

• There can be multiple valid wave arrays, so any valid wave array is acceptable.

• Ensure the first element is greater than or equal to the second element to start the wave pattern.
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Q2. 
Convert a Number to Words
Given an integer number num, your task is to convert 'num' into its corresponding word representation.
Input:
The first line of input contains an integer ‘T’ denoting the number o...read more
Ans. 
Convert a given integer number into its corresponding word representation.
• Implement a function that takes an integer as input and returns the word representation of that number.

• Break down the number into its individual digits and convert each digit into its word form.

• Handle special cases like numbers between 10 and 19, and multiples of 10.

• Combine the word forms of individual digits to form the final word representation
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Round duration - 40 minutes
Round difficulty - Easy

It was a managerial round. The position of the person taking the interview was of a technical architect. As was informed by the recruiter, previously he was a technical architect at Amazon.

Q1. How does Facebook store comments in its database?
Ans. 
Facebook stores comments in its database using a combination of relational and non-relational databases.
• Comments are typically stored in a relational database like MySQL for structured data storage.

• For scalability and performance, Facebook may also use a NoSQL database like Cassandra or HBase for storing comments in a denormalized format.

• Metadata related to comments such as likes, timestamps, and user information may b...read more
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Some database questions,some java questions .

Q1. What is the difference between javascript and jQuery.
Ans. 
JavaScript is a programming language used for web development, while jQuery is a library built with JavaScript to simplify HTML document traversal and manipulation.
• JavaScript is a programming language, while jQuery is a library written in JavaScript.

• JavaScript can be used for a wide range of tasks, while jQuery is mainly used for DOM manipulation and event handling.

• JavaScript is a core technology for web development, w...read more
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Q2. Define different types of join
Ans. 
Different types of joins are used in SQL to combine rows from two or more tables based on a related column between them.
• Inner Join: Returns rows when there is at least one match in both tables.

• Left Join (or Left Outer Join): Returns all rows from the left table and the matched rows from the right table.

• Right Join (or Right Outer Join): Returns all rows from the right table and the matched rows from the left table.

• Full ...read more
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Q3. Define multithreading concept and exception handling.
Ans. 
Multithreading allows multiple threads to run concurrently, while exception handling deals with errors in a program.
• Multithreading involves running multiple threads simultaneously to improve performance and responsiveness.

• Threads share the same memory space but have their own program counter and registers.

• Exception handling is a mechanism to handle errors or exceptional situations in a program.

• It helps prevent the prog...read more
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Q1. How can we improve the performance of a Front End System
Ans. 
Improving Front End System Performance
• Optimize images and reduce their size

• Minimize HTTP requests and use caching

• Use lazy loading for images and videos

• Reduce the number of DOM elements

• Use a Content Delivery Network (CDN)

• Minimize the use of external scripts and plugins

• Use asynchronous loading for scripts

• Optimize CSS and JavaScript files

• Use browser caching

• Implement server-side rendering
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Q2. What is Event Loop and give an example on how it works.
Ans. 
Event Loop is a mechanism that allows JavaScript to handle multiple tasks simultaneously.
• Event Loop is a part of JavaScript runtime that continuously checks the call stack and the task queue.

• It prioritizes the tasks in the queue and pushes them to the call stack when it's empty.

• This allows JavaScript to handle I/O operations and other asynchronous tasks without blocking the main thread.

• Example: setTimeout() function ad...read more
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- simple basic ios questions

Q1. Asked DSA array questions
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