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Hitachi Digital Services
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Hitachi Digital Services Golang Developer Interview Questions, Process, and Tips
Hitachi Digital Services Golang Developer Interview Experiences
1 interview found
Sameer Kape
I applied via Approached by Company and was interviewed in Sep 2023. There was 1 interview round.
(4 Questions)
- Q1. I give you 3 in input output should be 14, I give you 4 in input output should be 30
- Ans.
The output is calculated using a mathematical formula based on the input number.
The formula to calculate the output is: output = (input^2) + (input * 2)
For example, for input 3: output = (3^2) + (3 * 2) = 9 + 6 = 15
For example, for input 4: output = (4^2) + (4 * 2) = 16 + 8 = 24
- Q2. What is goroutine?
- Ans.
Goroutine is a lightweight thread of execution that allows concurrent programming in Go.
Goroutines are functions or methods that run concurrently with other goroutines.
They are managed by the Go runtime and have their own stack space.
Goroutines are more efficient than traditional threads and can be created easily using the 'go' keyword.
They communicate with each other using channels, which are built-in data structures ...
- Q3. Write program in Go include goroutine channel and wg
- Ans.
A program in Go that demonstrates the use of goroutines, channels, and a wait group.
Create a goroutine that performs a task concurrently.
Use channels to communicate between goroutines.
Use a wait group to synchronize the completion of goroutines.
Example: Calculate the sum of numbers using multiple goroutines and a channel.
- Q4. Provide alternative for time.Sleep()
- Ans.
time.Ticker is an alternative for time.Sleep() to create a repeating timer.
Use time.Ticker to create a ticker that ticks at regular intervals.
Use the ticker's C channel to receive the ticks.
Stop the ticker when done using the Stop() method.
Interview Preparation Tips
I had to call off the interview in between since the questions getting unbearable
The kind of questions I faced were laughable. It changed my perception about the Hitachi as being an Japanese org I had huge respect for it. Quality of developers they hire and quality of interviews they conduct shows the how Hitachi operates in india.
For any clarifications mail me: *****
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Interview questions from similar companies
Anonymous
I applied via Naukri.com and was interviewed in Nov 2023. There were 2 interview rounds.
(2 Questions)
- Q1. What is slice , Coding example on interface, What is difference between concurrency and parallelism
- Ans.
Slice is a dynamically-sized, flexible view of elements in an array. Concurrency is the ability to run multiple tasks at the same time, while parallelism is the actual execution of multiple tasks simultaneously.
Slice in Go is a reference to a portion of an array. It allows for dynamic resizing and manipulation of elements.
Example: var s []int = make([]int, 5) // creates a slice of length 5
Interfaces in Go define a set ...
- Q2. Coding questions on interface
Coding questions on slice and go routines
Interview Preparation Tips
Learn go routines and channels programming
Difference between concurrency and parallelism is must questions in many of the interviews
Skills evaluated in this interview
Ashwini Rathod
Selected
I applied via LinkedIn and was interviewed in Sep 2023. There were 4 interview rounds.
First round was aptitude test of 60 MCQs on Java , core Java in mettl platform.
Second round was coding round
one easy and one medium leetcode question.
(1 Question)
- Q1. In this round discussed about projects .
(1 Question)
- Q1. About yourself, what do you know about company? , How to overcome difficulties if task assigned is incomplete before due? Why are you switching job ? Are you ready to work on different techstack?
Selected
I applied via Campus Placement and was interviewed in Nov 2024. There were 3 interview rounds.
Logical reasoning, grammar, and coding: two basic level questions.
(3 Questions)
- Q1. Question on core Java
- Q2. Question on SQL and PLSQL
- Q3. Resume based question and on project
(2 Questions)
- Q1. Resume and project based question
- Q2. What do you like about your current company, and why do you want to join our organization?
- Ans.
I appreciate the collaborative team environment and innovative projects at my current company, and I am excited about the opportunities for growth and learning at your organization.
Collaborative team environment fosters creativity and productivity
Innovative projects challenge me to learn and grow
Excited about the opportunities for growth and learning at your organization
(2 Questions)
- Q1. Basic of java to advanced
- Q2. Array related questions
(2 Questions)
- Q1. Architecture related
- Q2. Management roles
Selected
DSA questions and programming concepts
(2 Questions)
- Q1. Reverse string and optimize it
- Ans.
Reverse array of strings efficiently
Use two pointers approach to swap characters from start and end of each string
Optimize by using in-place reversal instead of creating new strings
Consider edge cases like empty strings or strings with only one character
- Q2. Reverse binary tree
(2 Questions)
- Q1. Salary expectations
- Q2. Joining location
(3 Questions)
- Q1. Questions on spring boot and question around spring annotations and its benifits
- Q2. Questions on Java 8 - 21 versions such as virtual threads and stream API
- Q3. Question on Databases fundamentals.
Interview Preparation Tips
Sarankumar
Selected
I applied via Approached by Company and was interviewed in Jul 2024. There were 5 interview rounds.
Asked some basic level questions
Asked little bit hard questions
Asked depth questions and wrote some sample programs
(1 Question)
- Q1. Wrote some sample program
(1 Question)
- Q1. Salary discussion
Hackerrank coding round.
(1 Question)
- Q1. Questions and coding testing your OOPS knowledge
(1 Question)
- Q1. Every tech stack, SQL, OOPS, JAVA
Interview Preparation Tips
Selected
I was interviewed in Aug 2024.
(1 Question)
- Q1. Project amd Advanced C++ concepts
C++ coding questions and logical questions
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Hitachi Digital Services Golang Developer Interview Process
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