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ACKO SDE (Software Development Engineer) Interview Questions and Answers

Updated 16 Mar 2022

ACKO SDE (Software Development Engineer) Interview Experiences

1 interview found

I was interviewed in Feb 2022.

Round 1 - Aptitude Test 

3 coding question 1 SQL query

Round 2 - Technical 

(2 Questions)

  • Q1. Question about tree check tree is bst or not ?write code on it
  • Q2. Array question find 1st repeated element in o(n).
  • Ans. 

    Find the first repeated element in an array of strings in O(n) time complexity.

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

    • Traverse the array and check if the element is already present in the hash table.

    • If it is present, return the element as the first repeated element.

    • If no element is repeated, return null or -1.

    • Example: ['apple', 'banana', 'orange', 'apple'] => 'apple'

  • Answered by AI
Round 3 - Technical 

(1 Question)

  • Q1. Multiple of big integers and find complexity
  • Ans. 

    Question about finding complexity of multiplying big integers.

    • Big integers require more memory and processing power than regular integers.

    • Multiplying two n-digit integers takes O(n^2) time using the standard algorithm.

    • There are faster algorithms like Karatsuba and FFT which have lower complexity.

    • The complexity of multiplying two n-digit integers using Karatsuba algorithm is O(n^log2(3)).

    • The complexity of multiplying tw...

  • Answered by AI
Round 4 - HR 

(3 Questions)

  • Q1. Where do you see yourself in 5 years?
  • Q2. What are your strengths and weaknesses?
  • Q3. Tell me about yourself.

Interview Preparation Tips

Interview preparation tips for other job seekers - Be confidence focus on coding and core subjects.

Skills evaluated in this interview

Interview questions from similar companies

I applied via Referral and was interviewed in Sep 2022. There were 2 interview rounds.

Round 1 - Coding Test 

15 MCQs and 2 coding questions were given. MCQs include questions from topics like dbms, system design, oops etc.
1st coding question was of dp and 2nd was of a good question of graph.

Round 2 - One-on-one 

(2 Questions)

  • Q1. Create a linked list from scratch and then delete a given node. Then print the linked list.
  • Ans. 

    Create and delete a node in a linked list and print the updated list.

    • Create a Node class with data and next pointer attributes

    • Create a LinkedList class with head attribute and methods to add, delete and print nodes

    • To delete a node, traverse the list and update the next pointer of the previous node to skip the node to be deleted

    • Print the list by traversing and printing the data of each node

  • Answered by AI
  • Q2. Reverse first K(given) characters of string.
  • Ans. 

    Reverse the first K characters of a given string.

    • Take the first K characters of the string.

    • Reverse the selected substring.

    • Concatenate the reversed substring with the rest of the original string.

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare well. Be calm. Practice questions from leetcode.

Skills evaluated in this interview

I applied via Job Fair and was interviewed in Aug 2022. There were 4 interview rounds.

Round 1 - Technical 

(1 Question)

  • Q1. It was an MCQ Round and the questions were a mixture of CS fundamentals topics.
Round 2 - Coding Test 

This round contained 2 coding questions.

Round 3 - One-on-one 

(1 Question)

  • Q1. This was a one on one coding round where I was asked 3 questions that were of Easy to Medium level of LeetCode.
Round 4 - HR 

(1 Question)

  • Q1. HR round was more of a technical interview round where I was asked about my android projects and some core android topics since both me and my interviewer were Android Developers.

Interview Preparation Tips

Interview preparation tips for other job seekers - Keep practising on Leetcode and also since in my case Development played a major role in my selection so I would suggest whatever projects you are making on whatever platform do clear it's basic in and out.
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Instahyre and was interviewed before Feb 2022. There were 4 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 tips
Round 2 - Technical 

(2 Questions)

  • Q1. Number of Islands
  • Ans. 

    Count the number of islands in a 2D grid.

    • Iterate through the grid and for each '1', perform a depth-first search to mark all connected '1's as visited.

    • Increment the count of islands for each new '1' encountered.

    • Return the total count of islands.

  • Answered by AI
  • Q2. Coin change problem
  • Ans. 

    The coin change problem involves finding the minimum number of coins needed to make a certain amount of change.

    • Use dynamic programming to solve the problem efficiently

    • Start with a base case where the amount of change is 0

    • Iterate through each coin denomination and calculate the minimum number of coins needed for each amount of change

    • Store the results in a table and use them to calculate the minimum number of coins for l

  • Answered by AI
Round 3 - Technical 

(1 Question)

  • Q1. Javascript based questions
Round 4 - One-on-one 

(1 Question)

  • Q1. Discussion with a senior manager

Skills evaluated in this interview

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

75 min test with 18 Java theory questions

Round 2 - Technical 

(5 Questions)

  • Q1. Synchronized keyword usage
  • Ans. 

    The synchronized keyword in Java is used to control access to shared resources in a multithreaded environment.

    • Synchronized keyword can be used to synchronize access to critical sections of code to prevent race conditions.

    • It can be applied to methods or code blocks to ensure only one thread can access them at a time.

    • Example: synchronized void myMethod() { // code }

    • Example: synchronized(this) { // code }

  • Answered by AI
  • Q2. Message Queue types
  • Q3. Thread Contention
  • Q4. Java Profiling Tools
  • Q5. Abstract classes

Skills evaluated in this interview

Interview experience
1
Bad
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. One leetcode easy-medium problem
  • Q2. Java, springboot and oops question
Round 2 - Technical 

(2 Questions)

  • Q1. Project related questions
  • Q2. System design questions

Interview Preparation Tips

Interview preparation tips for other job seekers - HR didnt reach out post interviews
Interview experience
1
Bad
Difficulty level
Easy
Process Duration
2-4 weeks
Result
No response

I applied via Approached by Company and was interviewed in Jul 2024. There were 3 interview rounds.

Round 1 - Coding Test 

Normal DSA round from hacker rank

Round 2 - Coding Test 

DSA round from hacker rank or leetcode

Round 3 - Technical 

(1 Question)

  • Q1. With hiring manager

Interview Preparation Tips

Interview preparation tips for other job seekers - Ghosted after all rounds of interview.
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

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

Round 1 - Coding Test 

It was more based on array/string manipulation, stack/queue based, if you have solved questions before then it will be easy/medium difficulty level for yo

Round 2 - Technical 

(2 Questions)

  • Q1. Asteroid collision
  • Q2. Stack/queue based
Round 3 - One-on-one 

(1 Question)

  • Q1. Resume based discussion. therory concepts/ OOPS's , DBMS, OS,etc

Interview Preparation Tips

Interview preparation tips for other job seekers - Be confident and prepared for technical questions
Coding questions will be easy to medium , and expected to solve 2 questions fully.
Be communicative throughout the interview
Interview experience
3
Average
Difficulty level
Hard
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via LinkedIn and was interviewed in Apr 2024. There was 1 interview round.

Round 1 - HR 

(2 Questions)

  • Q1. Explain Concurrency
  • Ans. 

    Concurrency is the ability of a system to execute multiple tasks simultaneously.

    • Concurrency allows multiple tasks to run concurrently, improving performance and efficiency.

    • Concurrency can be achieved through multithreading or multiprocessing.

    • Example: A web server handling multiple requests simultaneously using multithreading.

  • Answered by AI
  • Q2. Explain Acid principles
  • Ans. 

    ACID principles are a set of properties that guarantee database transactions are processed reliably.

    • Atomicity: Transactions are all or nothing. If one part of the transaction fails, the entire transaction is rolled back.

    • Consistency: Transactions bring the database from one valid state to another. All constraints are satisfied.

    • Isolation: Transactions are isolated from each other until they are completed.

    • Durability: Once...

  • Answered by AI

Skills evaluated in this interview

Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(1 Question)

  • Q1. Given a code snippet, do code review and provide all the improvements. Mainly they look at how well you can catch the logical errors over minor improvements

ACKO Interview FAQs

How many rounds are there in ACKO SDE (Software Development Engineer) interview?
ACKO interview process usually has 4 rounds. The most common rounds in the ACKO interview process are Technical, Aptitude Test and HR.
What are the top questions asked in ACKO SDE (Software Development Engineer) interview?

Some of the top questions asked at the ACKO SDE (Software Development Engineer) interview -

  1. Multiple of big integers and find complex...read more
  2. Array question find 1st repeated element in o(...read more
  3. Question about tree check tree is bst or not ?write code on...read more

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