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Top 10 Interview Questions for Coding Job
Hello everyone!! Today’s blog topic is ‘Top 10 Interview Questions for Coding Job.’
Questions related to programming and coding are a crucial part of a developer’s position
interview. If you want to succeed, you need to be familiar with the fundamental concepts
of coding and programming. Your coding skills play a huge factor in increasing your
chances of hiring in the interview process. Coding is an excellent field with various career
opportunities within the country or even abroad but it also means it has lots of
competition which makes the whole interview process quite challenging.
However, you don’t have to worry about it because this blog is specially curated for those
aspirants who want to start their careers in the Coding field. We will be discussing ‘Top
10 Interview Questions for Coding Job’ that help you in excelling your job interview.
Before discussing the main topic, first, get familiar with the basic definition of Coding.
What is coding?
Coding is defined as the process of giving instructions to the computer using a
programming language. The websites, software, and application that we use every day
are run by these instructions.
You should learn coding because of the following benefits:
1. You can build your professional skills by learning coding because knowledge of
computer programming is a valuable employment asset.
2. You can earn decently after learning coding. When you get specialized in coding,
you transitioned into a programmer and the average starting salary of a
programmer is more than $85k per annum
3. You can understand the world around you better by learning coding and gaining a
good knowledge of technology landscape growing components.
4. Coding is a fun, enjoyable, and rewarding experience.
You can do the diploma course in Web development from our DOTNET Institute where
you can learn the fundamentals of coding and programming and we also provide both
online and offline courses at affordable prices. This diploma course has 16 Modules with
a duration of 6 months.
Also check: How to get started with coding: a beginner’s guide to programming
Top 10 Interview Questions for Coding Job
These are the top 10 interview questions for a coding job. Let’s have a look!!
1. How to find the first non-repeated character in a word?
To answer this first interview question for a coding job, the first thing you have to
do is to understand the way to promote this function. A function must be written
in a format that returns the first non-repeated character and accepts strings. Let
us understand it with an example,
In the word ‘Turtle’, the first non-repeated character is ‘u’. So, what is the solution
to this problem? You can use the linked hash map to store the character count to
write the code that will return the first non-repeated character in a word. Hash
Map sticks to the sequence of insertions and initialized the characters in the same
position as in the string. Linked Hash map iterated that scanned string to select the
required entry with the value 1.
2. How to remove duplicates from arrays?
This is one of the most important interview questions for a coding job. To answer
this interview question, you need to explain two processes in detail i.e., separate
index and temporary array. The array must be sorted to remove the duplicates.
The process of sorting an array is called the sort(arr) method. Also, you must retain
the original insertion sequence of the elements by using a set interface
(LinkedHashSet). To solve these types of coding interview questions, you need to
use recursion and loop functions.
The main thing, you have to keep in mind while working with arrays is that it is not
elements that have duplicates. The main concern is to remove duplicates instead.
Arrays can’t be altered because they are fixed-length static data structures. So, you
need to develop new arrays and copy the content in these new arrays, to remove
elements from arrays.
3. What are OOPs and what are the concepts that are
included in them?
This is one of the commonly asked interview questions for a coding job. This is how
you answer this interview question.
OOPs is an abbreviation for Object Oriented Programming system, a criterion that
provides concepts related to classes, inheritance, and objects.
These are following concepts that are included in the OOPs:
 Class: A logical entity that defines the fundamental structure from which an
object can be instantiated or created.
 Inheritance: A concept of an object getting all the behavior and properties of
the parent object. It also provides reusability of code.
 Object: A real-world entity with certain behavior and state or can be defined as
an instance of a class.
 Abstraction: Hiding internal details of an application and only showing its
functionality. We use interface and abstract class in Java to achieve abstraction.
 Encapsulation: The concept of data and code wrapping together in a single
unit.
 Polymorphism: The concept of performing a task in a different manner. We use
overloading and overriding methods in Java to achieve Polymorphism.
4. What do you understand by dynamic data structure?
This is also an important interview question for a coding job. You can answer this
question like this:
Dynamic data structure comes with a feature that allows it to expand and contract
as the program run. It is a flexible data manipulation method due to the fact that
it adjusts according to the data size that can be manipulated.
5. What is the difference between linear and non-linear data
structures?
Below is the answer to this interview question for the coding job. Check the table
for a brief explanation:
Linear data structure Non-linear data structure
 In this structure, the data
elements are beside each
other.
 E.g.: queues, arrays, stacks,
and linked lists.
 In this data structure, the
data elements are not
connected to adjacent data
elements.
 E.g.: trees and graphs
Also read: 20 Amazing Projects for Beginners to Start Coding
6. What is the basic difference between stack and array?
This is one of the frequently asked interview questions for a coding job. Answer
this interview question in such a way:
Stack follows LIFO (Last In First Out) pattern which basically means data access
certainly follows a specific order where the last data stored first will be extracted
first. While Arrays do not follow specific sequences, instead they can be accessed
by referring to indexed elements within the array.
7. What is the process after typing a website’s URL?
This is how you answer this interview question for a coding job. Check below:
When you type a website URL in a browser, then the browser checks the cache and
DNS record to the corresponding IP address. Then, it goes through the router
cache, ISP cache, and operating system cache. The browser commences a TCP
connection with the server and the ISP’s DNS server commences a DNS query to
find the IP address of the host site server. Lastly, the browser sends the web
browser an HTTP request, then the server gives a response and the browser shows
HTML content.
8. How to find the maximum chain length of a pair?
You may find that interview preparation for a coding job for hard skills is pretty
straightforward. You can read books and take online tests to enhance the technical
elements of your coding interview. Focus on understanding and explaining the
processes you use. Be apt with your response and use the correct term elements
and reference system. After explaining your method, write the solution code for it.
This is how you answer this coding interview question:
To find the maximum chain length of a pair, we use a sorting methodology to
separate within the given parameters for the pair. Then, compare the elements
using the LIS process.
9. What are doubly linked lists?
This is one of the conceptual interview questions for a coding job. This is how you
answer this coding interview question:
Doubly linked lists can be defined as the special kind of linked lists that consists of
a set of orderly linked records known as nodes. Each node has three fields: one
data field and two linked fields. It is also known as a two-way list. This list is possible
due to two links present in every node. One link connects to the next node and
that node connects to the other before.
10. Name the best sorting algorithm.
This is also one of the conceptual interview questions for a coding job, you must
know in order to get hired. This is how you answer this coding interview question:
There are multiple types of algorithms for sorting. These are some examples:
balloon sort, bubble sort, merge sort, quick sort, radix sort, etc. It is quite difficult
and unfair to declare any sorting algorithm best and fast because each of the
sorting algorithms is curated for a certain type of data structure where they show
their best output.
Also read: The Best Ways to Learn Computer Programming (For Beginners)
Tips for preparing for coding job interview
These are some valuable tips for preparing for a coding job interview:
 Contemplate the skills and tools necessary for the job role
 Read digital publications and helpful books
 Interview rehearsal
 Ask questions to interviewers
 Be relax
 Engage with the interviewer
Conclusion
It is time to go ace your coding interview with the above-mentioned interview questions
for a coding job. Take advantage of all the varied resources available out there to teach
you how to ace the coding interview like a pro. Be positive and relaxed and answer the
interview with ease, you will secure the coding job definitely
Also check: https://www.youtube.com/watch?v=LMMQwqsFoyw
FAQs
1. What are the skills required to be a web developer?
A web developer must have a good grip on HTML, CSS, and JavaScript. You should
also be familiar with libraries and frameworks like Bootstrap and jQuery.
2. What is the average salary for a web developer in India?
Around 3.0 LPA – 10.0 LPA INR
3. How long does it take to learn web development?
If you devote 2-3 hours daily to learning, it would take 6-8 months for completing
the whole syllabus.
4. How does the interviewer evaluate your coding skills in a technical interview?
They check your coding skills, problem-solving skills, and collaboration skills.
5. What are career options after learning coding?
Web developer, software engineer, Data scientist, Cybersecurity expert, UX
designer, etc.
6. What is the best approach to answering the job interview questions?
Be calm and patient while answering the questions.
7. How to make a good first impression on the interviewers?
To make good first impressions on the interviewers, first, dress formally, reach on
time for the interview, and always put a smile on your face.
8. How to practice for the job interview questions, the day before the actual
interview?
Stand in front of the mirror, and practice the interview questions as many times as
you can. It boosts your confidence.
9. Is it necessary to answer the questions in English?
If you look from a professional point of view, English is the main language used for daily
office commutes. So, if want to secure a job title for yourself, your English communication
and writing skills must be parred excellent.

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Top 10 Interview Questions for Coding Job.docx

  • 1. Top 10 Interview Questions for Coding Job Hello everyone!! Today’s blog topic is ‘Top 10 Interview Questions for Coding Job.’ Questions related to programming and coding are a crucial part of a developer’s position interview. If you want to succeed, you need to be familiar with the fundamental concepts of coding and programming. Your coding skills play a huge factor in increasing your chances of hiring in the interview process. Coding is an excellent field with various career opportunities within the country or even abroad but it also means it has lots of competition which makes the whole interview process quite challenging. However, you don’t have to worry about it because this blog is specially curated for those aspirants who want to start their careers in the Coding field. We will be discussing ‘Top 10 Interview Questions for Coding Job’ that help you in excelling your job interview. Before discussing the main topic, first, get familiar with the basic definition of Coding.
  • 2. What is coding? Coding is defined as the process of giving instructions to the computer using a programming language. The websites, software, and application that we use every day are run by these instructions. You should learn coding because of the following benefits: 1. You can build your professional skills by learning coding because knowledge of computer programming is a valuable employment asset. 2. You can earn decently after learning coding. When you get specialized in coding, you transitioned into a programmer and the average starting salary of a programmer is more than $85k per annum 3. You can understand the world around you better by learning coding and gaining a good knowledge of technology landscape growing components. 4. Coding is a fun, enjoyable, and rewarding experience. You can do the diploma course in Web development from our DOTNET Institute where you can learn the fundamentals of coding and programming and we also provide both online and offline courses at affordable prices. This diploma course has 16 Modules with a duration of 6 months. Also check: How to get started with coding: a beginner’s guide to programming Top 10 Interview Questions for Coding Job
  • 3. These are the top 10 interview questions for a coding job. Let’s have a look!! 1. How to find the first non-repeated character in a word? To answer this first interview question for a coding job, the first thing you have to do is to understand the way to promote this function. A function must be written in a format that returns the first non-repeated character and accepts strings. Let us understand it with an example, In the word ‘Turtle’, the first non-repeated character is ‘u’. So, what is the solution to this problem? You can use the linked hash map to store the character count to write the code that will return the first non-repeated character in a word. Hash Map sticks to the sequence of insertions and initialized the characters in the same position as in the string. Linked Hash map iterated that scanned string to select the required entry with the value 1. 2. How to remove duplicates from arrays? This is one of the most important interview questions for a coding job. To answer this interview question, you need to explain two processes in detail i.e., separate index and temporary array. The array must be sorted to remove the duplicates.
  • 4. The process of sorting an array is called the sort(arr) method. Also, you must retain the original insertion sequence of the elements by using a set interface (LinkedHashSet). To solve these types of coding interview questions, you need to use recursion and loop functions. The main thing, you have to keep in mind while working with arrays is that it is not elements that have duplicates. The main concern is to remove duplicates instead. Arrays can’t be altered because they are fixed-length static data structures. So, you need to develop new arrays and copy the content in these new arrays, to remove elements from arrays. 3. What are OOPs and what are the concepts that are included in them? This is one of the commonly asked interview questions for a coding job. This is how you answer this interview question. OOPs is an abbreviation for Object Oriented Programming system, a criterion that provides concepts related to classes, inheritance, and objects. These are following concepts that are included in the OOPs:  Class: A logical entity that defines the fundamental structure from which an object can be instantiated or created.  Inheritance: A concept of an object getting all the behavior and properties of the parent object. It also provides reusability of code.  Object: A real-world entity with certain behavior and state or can be defined as an instance of a class.
  • 5.  Abstraction: Hiding internal details of an application and only showing its functionality. We use interface and abstract class in Java to achieve abstraction.  Encapsulation: The concept of data and code wrapping together in a single unit.  Polymorphism: The concept of performing a task in a different manner. We use overloading and overriding methods in Java to achieve Polymorphism. 4. What do you understand by dynamic data structure? This is also an important interview question for a coding job. You can answer this question like this: Dynamic data structure comes with a feature that allows it to expand and contract as the program run. It is a flexible data manipulation method due to the fact that it adjusts according to the data size that can be manipulated. 5. What is the difference between linear and non-linear data structures?
  • 6. Below is the answer to this interview question for the coding job. Check the table for a brief explanation: Linear data structure Non-linear data structure  In this structure, the data elements are beside each other.  E.g.: queues, arrays, stacks, and linked lists.  In this data structure, the data elements are not connected to adjacent data elements.  E.g.: trees and graphs Also read: 20 Amazing Projects for Beginners to Start Coding 6. What is the basic difference between stack and array? This is one of the frequently asked interview questions for a coding job. Answer this interview question in such a way: Stack follows LIFO (Last In First Out) pattern which basically means data access certainly follows a specific order where the last data stored first will be extracted
  • 7. first. While Arrays do not follow specific sequences, instead they can be accessed by referring to indexed elements within the array. 7. What is the process after typing a website’s URL? This is how you answer this interview question for a coding job. Check below: When you type a website URL in a browser, then the browser checks the cache and DNS record to the corresponding IP address. Then, it goes through the router cache, ISP cache, and operating system cache. The browser commences a TCP connection with the server and the ISP’s DNS server commences a DNS query to find the IP address of the host site server. Lastly, the browser sends the web browser an HTTP request, then the server gives a response and the browser shows HTML content. 8. How to find the maximum chain length of a pair?
  • 8. You may find that interview preparation for a coding job for hard skills is pretty straightforward. You can read books and take online tests to enhance the technical elements of your coding interview. Focus on understanding and explaining the processes you use. Be apt with your response and use the correct term elements and reference system. After explaining your method, write the solution code for it. This is how you answer this coding interview question: To find the maximum chain length of a pair, we use a sorting methodology to separate within the given parameters for the pair. Then, compare the elements using the LIS process. 9. What are doubly linked lists? This is one of the conceptual interview questions for a coding job. This is how you answer this coding interview question: Doubly linked lists can be defined as the special kind of linked lists that consists of a set of orderly linked records known as nodes. Each node has three fields: one data field and two linked fields. It is also known as a two-way list. This list is possible due to two links present in every node. One link connects to the next node and that node connects to the other before.
  • 9. 10. Name the best sorting algorithm. This is also one of the conceptual interview questions for a coding job, you must know in order to get hired. This is how you answer this coding interview question: There are multiple types of algorithms for sorting. These are some examples: balloon sort, bubble sort, merge sort, quick sort, radix sort, etc. It is quite difficult and unfair to declare any sorting algorithm best and fast because each of the sorting algorithms is curated for a certain type of data structure where they show their best output. Also read: The Best Ways to Learn Computer Programming (For Beginners) Tips for preparing for coding job interview These are some valuable tips for preparing for a coding job interview:  Contemplate the skills and tools necessary for the job role  Read digital publications and helpful books  Interview rehearsal  Ask questions to interviewers  Be relax  Engage with the interviewer Conclusion
  • 10. It is time to go ace your coding interview with the above-mentioned interview questions for a coding job. Take advantage of all the varied resources available out there to teach you how to ace the coding interview like a pro. Be positive and relaxed and answer the interview with ease, you will secure the coding job definitely Also check: https://www.youtube.com/watch?v=LMMQwqsFoyw FAQs 1. What are the skills required to be a web developer? A web developer must have a good grip on HTML, CSS, and JavaScript. You should also be familiar with libraries and frameworks like Bootstrap and jQuery. 2. What is the average salary for a web developer in India? Around 3.0 LPA – 10.0 LPA INR 3. How long does it take to learn web development? If you devote 2-3 hours daily to learning, it would take 6-8 months for completing the whole syllabus. 4. How does the interviewer evaluate your coding skills in a technical interview? They check your coding skills, problem-solving skills, and collaboration skills. 5. What are career options after learning coding? Web developer, software engineer, Data scientist, Cybersecurity expert, UX designer, etc. 6. What is the best approach to answering the job interview questions? Be calm and patient while answering the questions. 7. How to make a good first impression on the interviewers? To make good first impressions on the interviewers, first, dress formally, reach on time for the interview, and always put a smile on your face. 8. How to practice for the job interview questions, the day before the actual interview? Stand in front of the mirror, and practice the interview questions as many times as you can. It boosts your confidence.
  • 11. 9. Is it necessary to answer the questions in English? If you look from a professional point of view, English is the main language used for daily office commutes. So, if want to secure a job title for yourself, your English communication and writing skills must be parred excellent.