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Coding Ninjas Software Developer Interview Questions and Answers

Updated 31 Oct 2024

Coding Ninjas Software Developer Interview Experiences

2 interviews found

Interview experience
3
Average
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Referral and was interviewed in Jul 2024. There were 3 interview rounds.

Round 1 - HR 

(2 Questions)

  • Q1. About Myself in details
  • Q2. Past internships and work experiences
Round 2 - Technical 

(2 Questions)

  • Q1. Primary keys, Unique key
  • Q2. Usage advantages and disadvantages of Indexing
Round 3 - Coding Test 

SQL- 1 departments with no users
2 dept_id and their respective no. of users

DSA1: Most frequent no. in an array
DSA2: Zero Sum subarray exists

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare basis DSA well
Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Referral and was interviewed before Oct 2023. There were 3 interview rounds.

Round 1 - One-on-one 

(2 Questions)

  • Q1. Find duplicates in an array
  • Ans. 

    Use a hash set to find duplicates in an array of strings.

    • Create a hash set to store unique elements.

    • Iterate through the array and check if the element is already in the hash set.

    • If it is, then it is a duplicate. If not, add it to the hash set.

  • Answered by AI
  • Q2. Find single duplicate element in an array where contents of the array are length of array - 1
  • Ans. 

    Find the single duplicate element in an array of strings with length n-1.

    • Iterate through the array and use a HashSet to keep track of elements seen so far.

    • If an element is already in the HashSet, that is the duplicate element.

    • Return the duplicate element once found.

  • Answered by AI
Round 2 - Assignment 

Create a student support system

Round 3 - One-on-one 

(1 Question)

  • Q1. Design an order and payments system for an EdTech company
  • Ans. 

    Design an order and payments system for an EdTech company

    • Allow users to browse and select courses

    • Implement a shopping cart for users to add courses

    • Integrate payment gateways for secure transactions

    • Provide order confirmation and receipt to users

    • Allow users to track their order status

  • Answered by AI

Skills evaluated in this interview

Software Developer Interview Questions Asked at Other Companies

asked in Amazon
Q1. Maximum Subarray Sum Problem Statement Given an array of integers ... read more
asked in Amazon
Q2. Minimum Number of Platforms Needed Problem Statement You are give ... read more
asked in Rakuten
Q3. Merge Two Sorted Arrays Problem Statement Given two sorted intege ... read more
asked in Cognizant
Q4. Nth Fibonacci Number Problem Statement Calculate the Nth term in ... read more
Q5. Find Duplicate in Array Problem Statement You are provided with a ... read more

Interview questions from similar companies

Interview experience
1
Bad
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
No response

I applied via LinkedIn and was interviewed in Feb 2023. There were 6 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all Resume tips
Round 2 - Technical 

(1 Question)

  • Q1. Data structures
Round 3 - Technical 

(1 Question)

  • Q1. System Design fundamentals
Round 4 - Technical 

(1 Question)

  • Q1. System Design questions
Round 5 - Behavioral 

(1 Question)

  • Q1. What do you think about the negative news going around the company
Round 6 - HR 

(1 Question)

  • Q1. Why join this company

Interview Preparation Tips

Interview preparation tips for other job seekers - They took 5 rounds of interview. 3 of them were technical and had easy to moderate level of questions. Rest 2 were more of HR rounds.
After taking 5 rounds, they have the audacity of not even calling back, picking up the calls or providing us with any information. If you are not interested in taking the candidate then why waste their time?

Funniest part is that they are fully aware of what a rubbish organization it is. In the later rounds they talked about cost cutting, negative news around the company, and employee complaints for work life balance. However, they are great at gaslighting as well because they make these sound like employee problems not employer problems.
Interview experience
3
Average
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Naukri.com and was interviewed before Aug 2023. There was 1 interview round.

Round 1 - Technical 

(2 Questions)

  • Q1. Explain about Android lifecycle
  • Ans. 

    Android lifecycle refers to the series of states that an activity or fragment goes through from creation to destruction.

    • Android lifecycle includes states like onCreate, onStart, onResume, onPause, onStop, onDestroy, etc.

    • Activities and fragments transition between these states based on user interactions and system events.

    • Understanding Android lifecycle is crucial for managing resources, saving state, and handling config...

  • Answered by AI
  • Q2. Explain about fragment lifecycle
  • Ans. 

    Fragment lifecycle refers to the series of events that occur in the lifespan of a fragment in an Android app.

    • Fragments go through various states like created, started, resumed, paused, stopped, and destroyed.

    • Fragment lifecycle methods include onCreate(), onCreateView(), onResume(), onPause(), onStop(), onDestroy(), etc.

    • Fragment lifecycle is closely tied to the hosting activity's lifecycle.

    • Understanding fragment lifecyc...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Look into basics

Skills evaluated in this interview

I was interviewed in Aug 2022.

Round 1 - Coding Test 

2 hrs duration with 2 easy level dsa questions and 15 around mcqs based on core cs concepts.

Round 2 - Technical 

(2 Questions)

  • Q1. Implement stack using linked list.
  • Ans. 

    Implementing stack using linked list

    • Create a Node class with data and next pointer

    • Create a Stack class with top pointer

    • Implement push() method to add element to top of stack

    • Implement pop() method to remove element from top of stack

    • Implement peek() method to return top element without removing it

  • Answered by AI
  • Q2. Print first duplicate value in a string.
  • Ans. 

    Find the first duplicate value in an array of strings.

    • Create a hash table to store the frequency of each string.

    • Iterate through the array and check if the string already exists in the hash table.

    • If it does, return the string. If not, add it to the hash table.

    • If no duplicates are found, return null or an appropriate message.

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Revise basic dsa and cs core concepts.
Can do Blind 75 for practice.

Skills evaluated in this interview

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Coding Test 

Simple coding questions.

Round 2 - Technical 

(2 Questions)

  • Q1. Simple coding questions
  • Q2. Whats your Name

Interview Preparation Tips

Interview preparation tips for other job seekers - Grab It
Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-
Round 1 - One-on-one 

(2 Questions)

  • Q1. Talk about your projects
  • Q2. Some Node JS question
Interview experience
2
Poor
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(1 Question)

  • Q1. Mother vertex and connected city

Interview Preparation Tips

Interview preparation tips for other job seekers - keep practicing DSA
Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Coding Test 

Asking the dp and tree and other

Round 2 - One-on-one 

(1 Question)

  • Q1. Asking the project based question and
Round 3 - HR 

(1 Question)

  • Q1. Some question asking base on cultural base and resume based
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Coding Test 

They discussed some easy questions on Node JS and Dp and heap , binary search

Round 2 - Technical 

(2 Questions)

  • Q1. Introduce yourself
  • Q2. What is multithreading and explain its usecases.
  • Ans. 

    Multithreading is the ability of a CPU to execute multiple threads concurrently, improving performance and responsiveness.

    • Multithreading allows for parallel execution of tasks, improving performance by utilizing multiple CPU cores.

    • It is commonly used in applications that require handling multiple tasks simultaneously, such as web servers, video games, and data processing.

    • Multithreading can help improve responsiveness i...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Please prepare cs fundamentals as well.

Skills evaluated in this interview

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Coding Ninjas Interview FAQs

How many rounds are there in Coding Ninjas Software Developer interview?
Coding Ninjas interview process usually has 3 rounds. The most common rounds in the Coding Ninjas interview process are One-on-one Round, HR and Technical.
What are the top questions asked in Coding Ninjas Software Developer interview?

Some of the top questions asked at the Coding Ninjas Software Developer interview -

  1. Find single duplicate element in an array where contents of the array are lengt...read more
  2. Design an order and payments system for an EdTech comp...read more
  3. Find duplicates in an ar...read more

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Coding Ninjas Software Developer Interview Process

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₹4.6 L/yr - ₹11.1 L/yr
32% more than the average Software Developer Salary in India
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