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Hach India Software Engineer Interview Questions and Answers

Updated 12 May 2024

Hach India Software Engineer Interview Experiences

1 interview found

Software Engineer Interview Questions & Answers

user image harshit agarwal

posted on 12 May 2024

Interview experience
3
Average
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
Selected Selected

I applied via Approached by Company and was interviewed before May 2023. There was 1 interview round.

Round 1 - One-on-one 

(1 Question)

  • Q1. C#,threading,angular, routing

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare well on the basics for tech stack you are being interviewed

Interview questions from similar companies

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

I applied via Campus Placement and was interviewed in Sep 2024. There were 2 interview rounds.

Round 1 - Technical 

(1 Question)

  • Q1. How to reverse two numbers without using temp variable
  • Ans. 

    To reverse two numbers without using a temp variable, use bitwise XOR operation.

    • Use bitwise XOR operation to swap two numbers without using a temp variable.

    • Example: a = 5, b = 7. a = a XOR b, b = a XOR b, a = a XOR b. After this, a = 7, b = 5.

  • Answered by AI
Round 2 - HR 

(1 Question)

  • Q1. Why do you want to join Thermo Fisher
  • Ans. 

    I want to join Thermo Fisher because of their reputation for innovation and impact in the scientific community.

    • Thermo Fisher is a leader in the scientific research and healthcare industry

    • I am impressed by their commitment to innovation and cutting-edge technology

    • I believe working at Thermo Fisher will provide me with opportunities for professional growth and development

  • Answered by AI

Interview Questionnaire 

2 Questions

  • Q1. According the qualifications
  • Q2. According the resume details qualifications
Interview experience
4
Good
Difficulty level
Hard
Process Duration
-
Result
-

I was interviewed in Aug 2024.

Round 1 - Aptitude Test 

Basic aptitude questions were asked Reasoning wgrh

Round 2 - Coding Test 

Two hard level coding questions of leetcode based on binary search

Interview Preparation Tips

Interview preparation tips for other job seekers - Best of luck you can do anything

I applied via Campus Placement and was interviewed in Jun 2021. There were 3 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Tell me about yourself

Interview Preparation Tips

Interview preparation tips for other job seekers - Say thanks

I applied via Company Website and was interviewed before Dec 2020. There were 3 interview rounds.

Interview Questionnaire 

7 Questions

  • Q1. Reverse a given Linked List. Both O(1) and O(N) space complexity. Where N is the size of Linked List.
  • Ans. 

    Reverse a given Linked List with O(1) and O(N) space complexity.

    • For O(1) space complexity, use three pointers to reverse the links in place.

    • For O(N) space complexity, use a stack to store the nodes and then pop them to create the reversed list.

    • Be careful with edge cases such as empty list or list with only one node.

  • Answered by AI
  • Q2. Explain your project. and give a brief overview for the technologies involved in the process of making the project. (Expect some cross-questioning for the technologies you are going to mention).
  • Q3. In a party of N people, only one person is known to everyone. Such a person may be present in the party, if yes, (s)he doesn't know anyone in the party. Find this celebrity (is present).
  • Ans. 

    Find the celebrity in a party of N people where only one person is known to everyone.

    • The celebrity doesn't know anyone in the party.

    • We can use a stack to keep track of potential celebrities.

    • If a person knows someone, they cannot be a celebrity.

    • If a person doesn't know someone, we can push them onto the stack.

    • After iterating through all people, we check if the stack has only one person and if that person is known to eve

  • Answered by AI
  • Q4. Explain in detail the working behind the algorithms of Merge Sort and Quick Sort.
  • Ans. 

    Merge Sort and Quick Sort are sorting algorithms that use divide and conquer approach.

    • Merge Sort divides the array into two halves, sorts them recursively, and then merges them.

    • Quick Sort selects a pivot element, partitions the array around the pivot, and recursively sorts the sub-arrays.

    • Merge Sort has a worst-case time complexity of O(nlogn), while Quick Sort has an average case time complexity of O(nlogn).

    • Merge Sort ...

  • Answered by AI
  • Q5. Trapping Rain-Water problem: Given N non-negative integers representing an elevation map where the width of each bar is 1, compute how much water it is able to trap after raining.
  • Ans. 

    Compute amount of water trapped in an elevation map after raining

    • Iterate through the array and find the maximum height on the left and right of each bar

    • Calculate the amount of water that can be trapped on each bar using the difference between the minimum of the two maximum heights and the height of the bar

    • Add up the amount of water trapped on each bar to get the total amount of water trapped

  • Answered by AI
  • Q6. Zigzag traversal of a given binary tree.
  • Ans. 

    Zigzag traversal of a binary tree is a way of traversing the tree in a zigzag pattern.

    • Use a stack to keep track of nodes to be visited.

    • For each level, alternate between adding nodes to the stack from left to right and right to left.

    • Pop nodes from the stack and add their children to the stack in the appropriate order.

    • Repeat until all nodes have been visited.

  • Answered by AI
  • Q7. Given a dictionary with {Key, Value} as {String, Integer}. Sort the given dictionary in ascending/descending order according to: 1) Key. 2) Value.
  • Ans. 

    Sort a dictionary by key or value in ascending/descending order.

    • Use sorted() function with lambda function to sort by key or value.

    • For ascending order, use reverse=False and for descending order, use reverse=True.

    • Example: sorted_dict = sorted(dictionary.items(), key=lambda x: x[0], reverse=True)

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - - Have a good understanding of Data Structures and Algorithm.
- Whatever your project may be, you should know aspect of it and expect some cross-questions as well.
- Be confident with what solution you are coming up, and try to make it efficient if asked.

Skills evaluated in this interview

Interview Questionnaire 

3 Questions

  • Q1. Why should we hire you?
  • Q2. What are your weaknesses?
  • Q3. What are your goals

Interview Preparation Tips

Interview preparation tips for other job seekers - Make list of questions that you would like to ask during the interview
Be prepared
Display confidence during interview

I applied via Naukri.com and was interviewed in May 2021. There were 4 interview rounds.

Interview Questionnaire 

4 Questions

  • Q1. Explain the difference b/w quick sort and merge sort ?
  • Ans. 

    Quick sort is a divide and conquer algorithm that sorts the array by selecting a pivot element and partitioning the other elements around it. Merge sort is also a divide and conquer algorithm that divides the array into two halves, sorts them separately and then merges them.

    • Quick sort has an average time complexity of O(n log n) while merge sort has a time complexity of O(n log n) in all cases.

    • Quick sort is an in-place...

  • Answered by AI
  • Q2. System Design for Naukri.com platform
  • Ans. 

    System design for Naukri.com platform

    • Identify user requirements and design the system architecture accordingly

    • Use scalable and reliable technologies for high traffic handling

    • Implement features like job search, job posting, resume upload, etc.

    • Ensure data security and privacy of users

    • Integrate with third-party services like payment gateways, social media platforms, etc.

  • Answered by AI
  • Q3. ADD two numbers (Linked List ) / leetcode question
  • Q4. Highest subset sum subarray ?
  • Ans. 

    Highest sum of contiguous subarray in an array

    • Use Kadane's algorithm to find the maximum sum subarray

    • Initialize max_so_far and max_ending_here to 0

    • Loop through the array and update max_ending_here and max_so_far

    • Return max_so_far as the highest subset sum subarray

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - There were 3 technical rounds . If you have clear concepts of Ds & Algo , it will do .Questions were mainly asked from DP, arrays and strings .Other than that some system design problems were also asked which includes the Design of Naukri.com.

Skills evaluated in this interview

I applied via Naukri.com and was interviewed in May 2021. There were 3 interview rounds.

Interview Questionnaire 

3 Questions

  • Q1. ADD two linkedlist (Leetcode Question)
  • Ans. 

    Add two linked lists and return the sum as a linked list.

    • Traverse both linked lists and add the corresponding nodes.

    • Handle carry over while adding nodes.

    • Create a new linked list to store the sum and return it.

  • Answered by AI
  • Q2. Knowledge about different tech stacks
  • Q3. Diff b/w quick sort and merge sort
  • Ans. 

    Quick sort is faster but unstable, while merge sort is slower but stable.

    • Quick sort uses a pivot element to divide the array into two parts and recursively sorts them.

    • Merge sort divides the array into two halves, sorts them separately, and then merges them.

    • Quick sort has an average time complexity of O(n log n), while merge sort has a time complexity of O(n log n) in all cases.

    • Quick sort is not stable, meaning that the...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Interview was good . All of the interviewers were friendly .It was a nice discussion.

Skills evaluated in this interview

Round 1 - HR 

(3 Questions)

  • Q1. What is your family background?
  • Q2. What are your salary expectations?
  • Q3. Why are you looking for a change?
Round 2 - Technical 

(1 Question)

  • Q1. Hi

Interview Preparation Tips

Interview preparation tips for other job seekers - Eny expirentince

Hach India Interview FAQs

How many rounds are there in Hach India Software Engineer interview?
Hach India interview process usually has 1 rounds. The most common rounds in the Hach India interview process are One-on-one Round.

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Hach India Software Engineer Interview Process

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