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Calsoft Golang Developer Interview Questions and Answers
7 Interview questions
Types of channels in Go and their use cases
Buffered channels: Allow multiple senders to send data without blocking until the buffer is full
Unbuffered channels: Synchronize goroutines by blocking sender until receiver is ready
Bidirectional channels: Allow both sending and receiving data
Receive-only channels: Restrict channel to only receive data
Send-only channels: Restrict channel to only send data
Concurrency is the ability to run multiple tasks simultaneously, achieving parallelism.
Go uses goroutines to achieve concurrency
Goroutines are lightweight threads managed by the Go runtime
Concurrency in Go is achieved using channels for communication between goroutines
Implement a stack using the given structure.
Create a struct with an array to store the stack elements and an index to keep track of the top element
Implement functions like push, pop, and peek to manipulate the stack
Ensure to handle stack overflow and underflow cases
Arrays have fixed size while slices are dynamic. Slices are references to arrays.
Arrays are declared with a fixed size while slices are declared without a size.
Slices are references to arrays and can be resized dynamically.
Arrays are passed by value while slices are passed by reference.
Slices have built-in functions like append() and copy() for manipulation.
Example: var arr [3]int = [3]int{1, 2, 3} and var sli []i...
Definition of struct, interface, method, and function.
Struct is a composite data type that groups together zero or more values with different types.
Interface is a collection of method signatures that a type can implement.
Method is a function that has a receiver argument.
Function is a block of code that performs a specific task and can be called from other parts of the program.
To create a package, define a new directory and add a file with package name and functions. My project is a web scraper.
Create a new directory with package name
Add a file with package name and functions
Import the package in main program
Use the functions in the package
Example: package name - scraper, functions - scrapeWebsite(url string) string
Example usage: import 'scraper', scraper.scrapeWebsite('https://example....
Implementing an interface with methods in Go
Define an interface with method signatures
Create a struct that implements the interface methods
Use the 'implements' keyword to associate the struct with the interface
Call the interface methods on the struct instance
Calsoft Golang Developer Interview Experiences
3 interviews found
(4 Questions)
- Q1. Was first asked about the project and techstack used there
- Q2. Implement stack if a structure is given
- Ans.
Implement a stack using the given structure.
Create a struct with an array to store the stack elements and an index to keep track of the top element
Implement functions like push, pop, and peek to manipulate the stack
Ensure to handle stack overflow and underflow cases
- Q3. What is concurrency and how we can achieve using go.
- Ans.
Concurrency is the ability to run multiple tasks simultaneously, achieving parallelism.
Go uses goroutines to achieve concurrency
Goroutines are lightweight threads managed by the Go runtime
Concurrency in Go is achieved using channels for communication between goroutines
- Q4. Different types of channels in go and where we can use these channels
- Ans.
Types of channels in Go and their use cases
Buffered channels: Allow multiple senders to send data without blocking until the buffer is full
Unbuffered channels: Synchronize goroutines by blocking sender until receiver is ready
Bidirectional channels: Allow both sending and receiving data
Receive-only channels: Restrict channel to only receive data
Send-only channels: Restrict channel to only send data
Skills evaluated in this interview
(1 Question)
- Q1. Go routine questions
madhu shree
I applied via Company Website and was interviewed in Jan 2023. There were 2 interview rounds.
(8 Questions)
- Q1. Why you choose golang,golang defination,go package
- Ans.
Golang is a statically typed, compiled language designed for simplicity, efficiency, and strong concurrency support.
Simplicity: Go's syntax is clean and easy to learn, making it accessible for new developers.
Concurrency: Go's goroutines and channels simplify concurrent programming, allowing efficient multitasking.
Performance: Being a compiled language, Go offers high performance comparable to C and C++.
Strong Standard ...
- Q2. Go mod,go sum,go root,go path
- Q3. Definition on struct,interface,method,functon
- Ans.
Definition of struct, interface, method, and function.
Struct is a composite data type that groups together zero or more values with different types.
Interface is a collection of method signatures that a type can implement.
Method is a function that has a receiver argument.
Function is a block of code that performs a specific task and can be called from other parts of the program.
- Q4. Program on interface,methods,write an implemention interface
- Ans.
Implementing an interface with methods in Go
Define an interface with method signatures
Create a struct that implements the interface methods
Use the 'implements' keyword to associate the struct with the interface
Call the interface methods on the struct instance
- Q5. Go suppoer oops concept?inheritence,polymorphism,struct embeded,encapsulation
- Q6. How you create own package,explain your project
- Ans.
To create a package, define a new directory and add a file with package name and functions. My project is a web scraper.
Create a new directory with package name
Add a file with package name and functions
Import the package in main program
Use the functions in the package
Example: package name - scraper, functions - scrapeWebsite(url string) string
Example usage: import 'scraper', scraper.scrapeWebsite('https://example.com')
- Q7. Difference between slice and array
- Q8. Difference between golang and other language
- Ans.
Go is a statically typed, compiled language with a focus on concurrency and simplicity.
Go has a simpler syntax compared to other languages like Java or C++
Go has built-in concurrency support with goroutines and channels
Go has a garbage collector that automatically manages memory
Go compiles to machine code, making it faster than interpreted languages like Python
Go has a standard library that includes many useful package...
Interview Preparation Tips
apply even if your not fully qualified
job searchlike its your job
use informational interviews to network
set your self apart with letters of recommendation
Skills evaluated in this interview
Top trending discussions
Interview questions from similar companies
Software Developer Interview Questions & Answers
Bounteous x Accolite
Anonymous
posted on 11 Mar 2022
I appeared for an interview before Mar 2021.
(3 Questions)
Round duration - 60 minutes
Round difficulty - Medium
21 students were shortlisted from the 1st MCQ round and in this round we were asked to write the codes (function only) of 3 questions in 1 hour time.
- Q1.
Rotting Oranges Problem Statement
You are given a grid containing oranges where each cell of the grid can contain one of the three integer values:
- 0 - representing an empty cell
- 1 - representing a fre...
- Ans.
Find the minimum time required to rot all fresh oranges in a grid.
Use Breadth First Search (BFS) to simulate the rotting process
Track the time taken to rot all oranges and return -1 if any fresh oranges remain
Handle edge cases like no fresh oranges or all oranges already rotten
Consider using a queue to efficiently process adjacent oranges
- Q2.
Majority Element Problem Statement
Given an array/list 'ARR' consisting of 'N' integers, your task is to find the majority element in the array. If there is no majority element present, return -1.
Exampl...
- Ans.
Find the majority element in an array, return -1 if no majority element exists.
Iterate through the array and keep track of the count of each element using a hashmap.
Check if any element's count is greater than floor(N/2) to determine the majority element.
Return the majority element or -1 if no majority element exists.
- Q3.
Maximum Path Sum Between Two Leaves Problem Description
You are provided with a non-empty binary tree in which each node contains a non-negative integer value. Your task is to find and return the maximum ...
- Ans.
Find the maximum path sum between two leaf nodes in a binary tree.
Traverse the tree to find the maximum path sum between two leaf nodes.
Keep track of the maximum sum found so far.
Consider all possible paths between leaf nodes.
Handle cases where the tree has only a single leaf node.
Implement a recursive function to calculate the maximum path sum.
(3 Questions)
Round duration - 60 minutes
Round difficulty - Medium
This was a technical round with DSA based questions.
- Q1.
N-th Node From The End Problem Statement
You are given a Singly Linked List of integers. The task is to find the N-th node from the end of the list.
Example:
Input:
If the given list is (1 -> -2 -&g...
- Ans.
Find the N-th node from the end of a Singly Linked List of integers.
Traverse the list to find the length L of the list.
Calculate the position of the N-th node from the beginning as L - N + 1.
Traverse the list again to reach the calculated position and return the node's value.
- Q2.
LCA of Binary Tree Problem Statement
You are given a binary tree consisting of distinct integers and two nodes,
XandY. Your task is to find and return the Lowest Common Ancestor (LCA) of these two nodes... - Ans.
Find the Lowest Common Ancestor (LCA) of two nodes in a binary tree.
Traverse the binary tree to find the paths from the root to nodes X and Y.
Compare the paths to find the last common node, which is the LCA.
Handle cases where one node is an ancestor of the other or when one node is the LCA itself.
- Q3.
Reverse Words in a String: Problem Statement
You are given a string of length
N. Your task is to reverse the string word by word. The input may contain multiple spaces between words and may have leading o... - Ans.
Reverse words in a string while handling leading/trailing spaces and multiple spaces between words.
Split the input string by spaces to get individual words
Reverse the list of words
Join the reversed words with a single space in between
Handle leading/trailing spaces by stripping them before and after reversing
(3 Questions)
Round duration - 60 minutes
Round difficulty - Easy
Technical Interview round with questions based on DSA
- Q1.
Minimum Time To Solve The Problems
Given 'N' subjects, each containing a certain number of problems, and 'K' friends, assign subjects to friends such that each subject goes to exactly one friend, maintain...
- Ans.
Assign subjects to friends to minimize maximum workload, find minimum time for most loaded friend.
Sort subjects in descending order
Assign subjects to friends one by one until all subjects are assigned
The maximum workload will be the sum of problems assigned to the friend with the most problems
Return the maximum workload as the minimum time required
- Q2. What is grammar in the context of compiler design?
- Ans.
Grammar in compiler design defines the syntax and structure of a programming language.
Grammar specifies the rules for forming valid statements in a programming language.
It consists of a set of production rules that define how valid programs can be constructed.
There are different types of grammars such as context-free grammar, regular grammar, etc.
Example: In C programming language, the grammar specifies that a for loop...
- Q3. What is a token in compiler design?
- Ans.
A token in compiler design is a basic unit of syntax that the compiler can understand and process.
Tokens are the smallest units of a program that are meaningful to the compiler.
Examples of tokens include keywords, identifiers, operators, and punctuation symbols.
Tokens are generated by the lexical analysis phase of the compiler.
Tokens are used by the parser to build the abstract syntax tree of the program.
(3 Questions)
Round duration - 60 minutes
Round difficulty - Easy
Technical round with questions on DSA and Compiler Design mainly. He told me that you’ll be having your final HR round in some time. I knew that I was going well because he seemed to be quite satisfied with my answers.
- Q1.
Sum Root to Leaf Numbers
You are given an arbitrary binary tree consisting of N nodes, each associated with an integer value from 1 to 9. Each root-to-leaf path can be considered a number formed by concat...
- Ans.
Find the total sum of all root to leaf paths in a binary tree formed by concatenating node values.
Traverse the binary tree from root to leaf nodes, keeping track of the current path sum
Add the current path sum to the total sum when reaching a leaf node
Use modulo (10^9 + 7) to handle large outputs
- Q2. What is a regular language?
- Ans.
A regular language is a language that can be recognized by a finite automaton.
Regular languages can be described by regular expressions.
Regular languages are closed under union, concatenation, and Kleene star operations.
Examples of regular languages include the set of all strings over an alphabet that contain an even number of 'a's.
- Q3. What are NP and NP-Hard problems?
- Ans.
NP problems are decision problems that can be verified in polynomial time, while NP-Hard problems are at least as hard as the hardest problems in NP.
NP problems can be verified in polynomial time but not necessarily solved in polynomial time.
NP-Hard problems are at least as hard as the hardest problems in NP, but may not be in NP themselves.
Examples of NP problems include the subset sum problem and the traveling salesm...
Round duration - 30 minutes
Round difficulty - Easy
That was the round for which I’ve been waiting for hours
She was very friendly and nice to talk to. It didn’t seem that I was talking to the HR. It was more like talking to a friend. Finally we discussed about the pay-scale and work culture in Accolite.
Interview Preparation Tips
Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.
Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.
Skills evaluated in this interview
Software Developer Interview Questions & Answers
Bounteous x Accolite
Anonymous
posted on 27 Jul 2022
I applied via Campus Placement and was interviewed before Jul 2021. There were 5 interview rounds.
Round 1 was about 60 mins long. Basic Aptitude questions along with Programming MCQ
Round 2 had 2 coding questions with a time limit of 60mins. Intermediate level problem solving
knowledge is neccessary.
(1 Question)
- Q1. Technical Round 1 was 1hr long. Detailed Insights about my project and a few programming questions in DSA
(1 Question)
- Q1. This Technical Round 2 was 1hr long and was mainly focused on problem solving skills and a few basic programming concepts.
(1 Question)
- Q1. Three Situational questions were asked .
Interview Preparation Tips
- Data Structures
- Algorithms
- CPP
- Problem Solving
Software Developer Interview Questions & Answers
Bounteous x Accolite
Deepak Kumar
posted on 12 Jun 2021
I applied via Campus Placement and was interviewed in Dec 2020. There was 1 interview round.
Interview Questionnaire
2 Questions
- Q1. 1. If you given a no return its corresponding excel no.
- Ans.
Convert given no to corresponding excel no.
Excel no starts from 1 and goes up to 16384
Excel no is calculated using column and row numbers
For example, 1 corresponds to A, 27 corresponds to AA, 28 corresponds to AB, and so on
- Q2. 2. find unique character in a window of k size in a string
- Ans.
Find unique characters in a window of k size in a string.
Use a sliding window approach.
Maintain a hash table to keep track of character frequency.
Remove characters from hash table as the window slides.
Interview Preparation Tips
Skills evaluated in this interview
I applied via Campus Placement and was interviewed in May 2022. There were 3 interview rounds.
It was a 1 Hour aptitude test along a few MCQ based questions on DSA.
(6 Questions)
- Q1. The interview was held online. The interview first asked me to explain any one of my projects.
- Q2. Asked a a few basic question of DSA like difference between quick and merge sort. Time complexities of a few algorithms. Real life application of Trees.
- Q3. A few basic questions related to OOPs
- Q4. Find missing numbers in a list in Python. (He asked me a few concepts related to Python since most of my projects were made in that)
- Ans.
Identify and return missing numbers from a given list in Python using various methods.
Use a set to find missing numbers: Convert the list to a set and compare with a complete set of numbers.
Example: Given list [1, 2, 4, 6], complete set is {1, 2, 3, 4, 5, 6}. Missing: {3, 5}.
Utilize list comprehension: Create a list of numbers in the range and filter out those present in the original list.
Example: [n for n in range(1, ...
- Q5. If A,B both classes have a function with same name (lets say the name of function id FUN) and C is a child of both. So, if FUN is called for C what will happen in Python and in C++.
- Ans. Will give an error in C++, But will call FUN from whichever parent was declared first in Python
- Q6. He also asked me to implement quick sort
- Ans.
Quick sort is an efficient sorting algorithm that uses a divide-and-conquer approach to sort elements in an array.
1. Choose a 'pivot' element from the array. Example: In [3, 6, 8, 10, 1, 2, 1], choose 6 as pivot.
2. Partition the array into two sub-arrays: elements less than the pivot and elements greater than the pivot.
3. Recursively apply the above steps to the sub-arrays. Example: [3, 1, 2] and [8, 10] after partitio...
Interview Preparation Tips
- OOPS
Learn the concepts of OOPs.
Selected
I applied via Naukri.com and was interviewed in Oct 2024. There were 3 interview rounds.
Online zoom coding test will be there - 4 questions - 2 about output of code & 2 about technical questions.
(2 Questions)
- Q1. Polymorphism and explain about virtual polymorphism
- Ans.
Polymorphism is the ability of a single function or method to operate on different types of data.
Polymorphism allows objects of different classes to be treated as objects of a common superclass.
Virtual polymorphism is achieved through virtual functions in C++.
Virtual functions allow a function in a base class to be overridden in a derived class.
Example: Animal class with virtual function 'makeSound' overridden in Dog a...
- Q2. Write code for virtual polymorphism and explain
- Ans.
Virtual polymorphism allows objects of different classes to be treated as objects of a common superclass.
Create a base class with virtual functions
Create derived classes that override the virtual functions
Use pointers or references of the base class to call the overridden functions
(3 Questions)
- Q1. About yourself should explain
- Q2. Reason for job change
- Ans.
I seek new challenges and opportunities for growth that align with my career goals and aspirations in software development.
Career Growth: I'm looking for a position that offers more opportunities for advancement, such as leading projects or mentoring junior developers.
Skill Development: I want to work with new technologies and frameworks that will enhance my skill set, like transitioning from Java to modern cloud techn...
- Q3. Salary negotiations and location
Interview Preparation Tips
Skills evaluated in this interview
I applied via Campus Placement and was interviewed before Dec 2023. There were 3 interview rounds.
Coding questions and some aptitude questions
(1 Question)
- Q1. Asked oops concept
(1 Question)
- Q1. What is ur 5year goal
- Ans.
My 5-year goal is to become a lead software developer in a reputable tech company, leading a team of developers and working on cutting-edge projects.
Advance my technical skills by learning new programming languages and technologies
Gain experience in project management and leadership roles
Contribute to open-source projects and attend tech conferences to network and stay updated with industry trends
Interview Preparation Tips
Software Developer Interview Questions & Answers
Bounteous x Accolite
Anonymous
posted on 16 Jun 2024
There were 2 easy - difficult leetcode questions
(2 Questions)
- Q1. They ask us to intoroduce
- Ans.
I am a passionate software developer with experience in building scalable applications and a strong foundation in programming languages.
Background: I have a degree in Computer Science and have worked on various projects during my studies.
Experience: I have 3 years of experience in full-stack development, primarily using JavaScript, React, and Node.js.
Projects: I developed an e-commerce platform that increased sales by ...
- Q2. Rest were around resume
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