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Successive Technologies Full Stack Developer Interview Questions, Process, and Tips
Successive Technologies Full Stack Developer Interview Experiences
1 interview found
Anonymous
I applied via Company Website and was interviewed in Mar 2021. There was 1 interview round.
Interview Questionnaire
21 Questions
- Q1. I applied for MEAN stack developer. So they asked me Explain Event Loop in details?
- Q2. What is difference in forEach and map?
- Ans.
forEach and map are both array methods in JavaScript, but they differ in their return values and usage.
forEach executes a provided function once for each array element and does not return anything.
map creates a new array with the results of calling a provided function on every element in the array.
forEach is used when we want to perform an action on each element of the array, while map is used when we want to transform...
- Q3. What is rest and spread operator?
- Ans.
Rest and spread operators are used in JavaScript to manipulate arrays and objects.
Rest operator allows us to represent an indefinite number of arguments as an array.
Spread operator allows us to spread an array or object into individual elements.
Rest operator is denoted by three dots (...)
Spread operator is also denoted by three dots (...) but is used in a different context.
Rest operator can be used in function paramete...
- Q4. What are closures?
- Ans.
Closures are functions that have access to variables in their outer scope, even after the outer function has returned.
Closures are created when a function is defined inside another function.
The inner function has access to the outer function's variables and parameters.
Closures can be used to create private variables and methods in JavaScript.
Closures can also be used to create functions with pre-set arguments.
- Q5. What is call, apply, bind ?
- Ans.
Call, apply, and bind are methods used to manipulate the 'this' keyword in JavaScript functions.
Call invokes a function with a specified 'this' value and arguments provided individually.
Apply invokes a function with a specified 'this' value and arguments provided as an array.
Bind returns a new function with a specified 'this' value and initial arguments.
All three methods are used to control the value of 'this' in a fun
- Q6. What is hoisting?
- Ans.
Hoisting is a JavaScript mechanism where variables and function declarations are moved to the top of their scope.
Variables declared with var are hoisted to the top of their scope
Function declarations are also hoisted to the top of their scope
Function expressions are not hoisted
Hoisting can lead to unexpected behavior and bugs
- Q7. What is difference of for of and for in loop?
- Ans.
for of loop is used to iterate over iterable objects while for in loop is used to iterate over object properties.
for of loop is used with arrays, strings, maps, sets, etc.
for in loop is used with objects to iterate over its properties.
for of loop returns the values of the iterable object while for in loop returns the keys of the object properties.
for of loop cannot be used with plain objects while for in loop can be us
- Q8. What is dependency injection?
- Ans.
Dependency injection is a design pattern that allows objects to receive dependencies rather than creating them internally.
Dependency injection is a way to achieve loose coupling between objects.
It allows for easier testing and maintenance of code.
There are three types of dependency injection: constructor injection, setter injection, and interface injection.
Example: Instead of creating a database connection object insid...
- Q9. How Angular project starts?
- Ans.
Angular project starts with creating a new project using Angular CLI.
Install Angular CLI globally using npm
Create a new project using ng new command
Serve the project using ng serve command
Open the project in a browser at http://localhost:4200/
- Q10. What is package.json what are the different segments?
- Ans.
package.json is a file used in Node.js projects to manage dependencies and scripts.
Contains metadata about the project
Lists dependencies and devDependencies
Scripts for running tasks
Version of Node.js required
Author and license information
- Q11. What is service in Angular, Observables?
- Ans.
Services in Angular are singleton objects that provide functionality to components. Observables are used for asynchronous data streams.
Services are used to share data and functionality across components
Services are singleton objects that can be injected into components
Observables are used for asynchronous data streams
Observables can be subscribed to in order to receive data
Observables can emit multiple values over time
- Q12. What is component in Angular?
- Ans.
A component is a building block of an Angular application that represents a part of the UI.
Components are reusable and can be nested within other components.
Each component has its own template, styles, and logic.
Components communicate with each other using inputs and outputs.
Angular CLI generates components using the command 'ng generate component'.
- Q13. What is difference between Observables and Promises?
- Ans.
Observables are streams of data that can be subscribed to, while Promises are one-time operations that return a single value.
Observables can emit multiple values over time, while Promises can only return a single value.
Observables can be cancelled, while Promises cannot.
Observables are lazy, meaning they only emit values when subscribed to, while Promises are eager and immediately execute when created.
Observables have ...
- Q14. What is Promises?
- Ans.
Promises are a way to handle asynchronous operations in JavaScript.
Promises represent a value that may not be available yet, but will be resolved at some point in the future.
They have three states: pending, fulfilled, or rejected.
Promises can be chained together using .then() and .catch() methods.
They help avoid callback hell and make code more readable and maintainable.
Example: fetch() API returns a Promise that resol
- Q15. What is Callbacks?
- Ans.
Callbacks are functions passed as arguments to another function to be executed later.
Callbacks are commonly used in asynchronous programming.
They allow for non-blocking execution of code.
Callbacks can be anonymous or named functions.
Example: setTimeout(function() { console.log('Hello, world!'); }, 1000);
- Q16. What is callback hell and how we can resolve it?
- Ans.
Callback hell is a situation where nested callbacks make code difficult to read and maintain.
Use named functions instead of anonymous functions
Use Promises or async/await to handle asynchronous operations
Use modularization and separation of concerns to break down complex code
Use error handling to prevent code from breaking
- Q17. What is async await?
- Ans.
Async/await is a way to write asynchronous code in a synchronous style.
Async/await is a syntax for writing asynchronous code in JavaScript.
It allows you to write asynchronous code that looks like synchronous code.
It uses the 'async' keyword to define an asynchronous function and the 'await' keyword to wait for a promise to resolve.
It helps to avoid callback hell and makes code more readable and maintainable.
- Q18. What is CSS Box model?
- Ans.
CSS Box model is a design concept that describes how elements are displayed on a webpage.
It consists of content, padding, border, and margin.
Content is the actual element content, padding is the space between content and border, border is the element's border, and margin is the space between border and other elements.
The box model can be adjusted using CSS properties such as padding, border, and margin.
Understanding th...
- Q19. What is Flex box?
- Ans.
Flexbox is a CSS layout module that allows you to easily align and distribute space among items in a container.
Flexbox is used for creating responsive and flexible layouts.
It allows you to specify how much space each item should take up in a container.
You can align items vertically and horizontally using flexbox properties.
Flexbox is supported by all modern browsers.
Example: display: flex; justify-content: center; alig
- Q20. What is keyframes?
- Ans.
Keyframes are markers in time used for animation.
Keyframes define the starting and ending points of an animation.
They can also define intermediate points for more complex animations.
CSS and JavaScript both use keyframes for animation.
Example: @keyframes in CSS or the Keyframe API in JavaScript.
- Q21. What is media queries?
- Ans.
Media queries are CSS rules that apply different styles based on the device's screen size, orientation, and resolution.
Media queries are used to create responsive web designs.
They allow developers to target specific devices and adjust the layout accordingly.
Media queries use the @media rule in CSS.
Examples of media queries include adjusting font sizes, hiding or showing elements, and changing the layout.
Media queries c
Interview Preparation Tips
1) Build some portfolio projects.
- You will get practical experience
- You can showcase your portfolio to recruiters, It will increase your chances of getting selected.
2) Prepare your answer template
Eg - Definition, Overview, Example
- This way you know where you are strong and weak.
- Recruiter panel may have some people from business, some tech guys
So by definition and overview everyone understands what are you saying, tech people consider example or tech answers. This way you are catching everyone's attention. If you go with example and typical tech answers non-technical guy will get bored and no example means less practical knowledge.
If you don't know much about what they ask, tell whatever you know def or overview or example..
3) If you got rejected, don't get disappointed, remember the Questions they asked, note down in book. Calm down, prepare those questions.
This way you are increasing your ammunition for next interviews ?
4) Don't get nervous if you don't know the answer, be confident calm and composed.
Thanks, Best of luck ??
Skills evaluated in this interview
Top trending discussions
Interview questions from similar companies
I appeared for an interview before Mar 2021.
Round duration - 30 minutes
Round difficulty - Medium
This was a MCQ round. 30 ques in 30 mins consisting of difficult quantitative aptitude questions were to be solved.
(2 Questions)
Round duration - 60 minutes
Round difficulty - Medium
In this test round, 2 coding questions were given. Either write the code or pseudo code
- Q1.
N Queens Problem
Given an integer
N, find all possible placements ofNqueens on anN x Nchessboard such that no two queens threaten each other.Explanation:
A queen can attack another queen if they ar...
- Ans.
The N Queens Problem involves finding all possible placements of N queens on an N x N chessboard without threatening each other.
Use backtracking algorithm to explore all possible configurations.
Keep track of rows, columns, and diagonals to ensure queens do not threaten each other.
Generate all valid configurations and print them out.
- Q2.
Sort 0 1 2 Problem Statement
Given an integer array
arrof size 'N' containing only 0s, 1s, and 2s, write an algorithm to sort the array.Input:
The first line contains an integer 'T' representing the n... - Ans.
Sort an array of 0s, 1s, and 2s in linear time complexity.
Use three pointers to keep track of 0s, 1s, and 2s while traversing the array.
Swap elements based on the values encountered to sort the array in-place.
Time complexity should be O(N) and space complexity should be O(1).
(2 Questions)
Round duration - 60 minutes
Round difficulty - Easy
This was a technical round with questions on DSA.
- Q1.
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, and multiple spaces.
Split the input string by spaces to get individual words
Reverse the order of the words
Join the reversed words with a single space in between
- Q2.
Circular Linked List Detection
You are provided with the head of a linked list containing integers. Your task is to determine if the linked list is circular.
Note:
- A linked list is considered circula...
- Ans.
Detect if a given linked list is circular by checking if it forms a closed loop.
Traverse the linked list using two pointers, one moving at double the speed of the other.
If the two pointers meet at any point, the linked list is circular.
If the faster pointer reaches the end of the list (NULL), the linked list is not circular.
Round duration - 30 minutes
Round difficulty - Easy
HR round with typical behavioral problems.
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
Selected
I applied via Campus Placement and was interviewed before Sep 2023. There were 3 interview rounds.
Basic aptitude questions
3 basic questions they asked
Pointer and SQL related questions
I applied via Campus Placement and was interviewed in Apr 2023. There were 4 interview rounds.
It was an 1hr interview session
(1 Question)
- Q1. Find the occurrence of each element in an array
- Ans.
Count the occurrence of each element in an array of strings
Iterate through the array and use a hashmap to store the count of each element
If element already exists in the hashmap, increment its count by 1
Return the hashmap with element counts
(1 Question)
- Q1. Tell me about yourself
Interview Preparation Tips
- array
- string
- map
- dynamic programming
Skills evaluated in this interview
I appeared for an interview in Mar 2021.
(4 Questions)
Round duration - 120 minutes
Round difficulty - Medium
Timing was 9: 30 AM. Platform was quite good and easy to understand.
- Q1.
Reverse Only Letters Problem Statement
You are given a string
S. The task is to reverse the letters of the string while keeping non-alphabet characters in their original position.Example:
Input:
S = "...
- Ans.
Reverse the letters of a string while keeping non-alphabet characters in their original position.
Iterate through the string and maintain two pointers, one at the start and one at the end, to reverse only the letters
Use isalpha() function to check if a character is an alphabet or not
Swap the letters at the two pointers until they meet in the middle
- Q2.
Find Duplicates in an Array
Given an array
ARRof size 'N', where each integer is in the range from 0 to N - 1, identify all elements that appear more than once.Return the duplicate elements in any orde...
- Ans.
Find duplicates in an array of integers within a specified range.
Iterate through the array and keep track of the count of each element using a hashmap.
Return elements with count greater than 1 as duplicates.
Time complexity can be optimized to O(N) using a set to store duplicates.
Example: For input [0, 3, 1, 2, 3], output should be [3].
- Q3.
Pancake Sorting Problem Statement
You are given an array of integers 'ARR'. Sort this array using a series of pancake flips. In each pancake flip, you need to:
Choose an integer 'K' where 1 <= 'K' <... - Ans.
Sort an array using pancake flips and return the sequence of flips made.
Iterate through the array and find the position of the maximum element in each iteration.
Perform pancake flips to move the maximum element to the correct position.
Continue this process until the array is sorted.
Return the sequence of positions from where flips were made.
- Q4.
Sum of Digits Problem Statement
Given an integer 'N', continue summing its digits until the result is a single-digit number. Your task is to determine the final value of 'N' after applying this operation ...
- Ans.
Given an integer, find the final single-digit value after summing its digits iteratively.
Iteratively sum the digits of the given integer until the result is a single-digit number
Output the final single-digit integer for each test case
Handle multiple test cases efficiently
(2 Questions)
Round duration - 30 minutes
Round difficulty - Medium
Timing was 9:30 AM. The interviewer was very nice.
- Q1.
Fibonacci Number Verification
Identify if the provided integer 'N' is a Fibonacci number.
A number is termed as a Fibonacci number if it appears in the Fibonacci sequence, where each number is the sum of...
- Ans.
Check if a given number is a Fibonacci number or not.
Iterate through the Fibonacci sequence until you find a number greater than or equal to the given number.
Check if the given number matches the Fibonacci number found in the sequence.
If the number matches, output 'YES'; otherwise, output 'NO'.
- Q2. Write an SQL query to find the second highest salary from a table.
- Ans.
SQL query to find the second highest salary from a table
Use the MAX() function to find the highest salary
Use the WHERE clause to exclude the highest salary
Order the salaries in descending order and limit the result to 1
(2 Questions)
Round duration - 30 Minutes
Round difficulty - Medium
Timing was 12 PM. Interviewer was not good.
- Q1.
Character Frequency Problem Statement
You are given a string 'S' of length 'N'. Your task is to find the frequency of each character from 'a' to 'z' in the string.
Example:
Input:
S : abcdg
Output:
1...
- Ans.
The task is to find the frequency of each character from 'a' to 'z' in a given string.
Create an array of size 26 to store the frequency of each character from 'a' to 'z'.
Iterate through the string and increment the count of the corresponding character in the array.
Print the array of frequencies as the output for each test case.
- Q2. What is normalization and can you explain the concept of Third Normal Form (3NF)?
- Ans.
Normalization is the process of organizing data in a database to reduce redundancy and improve data integrity.
Normalization is a technique used to organize data in a database efficiently.
Third Normal Form (3NF) is a level of normalization that ensures that data is stored in a way that prevents certain types of data anomalies.
In 3NF, every non-prime attribute is fully functionally dependent on the primary key.
For exampl...
Interview Preparation Tips
Tip 1 : Do 2 projects.
Tip 2 : Practice data structures programs.
Tip 3 : Take a course on Coding Ninjas.
Tip 1 : Keep it short.
Tip 2 : Do not put false things on resume.
Skills evaluated in this interview
I appeared for an interview in Apr 2021.
(4 Questions)
Round duration - 120 minutes
Round difficulty - Easy
Timing was 9: 30 AM. Platform was quite good and easy to understand.
- Q1.
Reverse Only Letters Problem Statement
You are given a string
S. The task is to reverse the letters of the string while keeping non-alphabet characters in their original position.Example:
Input:
S = "...
- Ans.
Reverse the letters of a string while keeping non-alphabet characters in their original position.
Iterate through the string and store the non-alphabet characters in their original positions
Reverse the letters using two pointers technique
Combine the reversed letters with the non-alphabet characters to get the final reversed string
- Q2.
Find the Duplicate Number Problem Statement
Given an integer array 'ARR' of size 'N' containing numbers from 0 to (N - 2). Each number appears at least once, and there is one number that appears twice. Yo...
- Ans.
Find the duplicate number in an array of integers from 0 to N-2.
Iterate through the array and keep track of the frequency of each number using a hashmap.
Return the number with a frequency greater than 1 as the duplicate number.
- Q3.
Reverse Array Elements
Given an array containing 'N' elements, the task is to reverse the order of all array elements and display the reversed array.
Explanation:
The elements of the given array need to...
- Ans.
Reverse the order of elements in an array and display the reversed array.
Iterate through the array from both ends and swap the elements until the middle is reached.
Use a temporary variable to store the element being swapped.
Print the reversed array after all elements have been swapped.
- Q4.
Sum of Digits Problem Statement
Given an integer 'N', continue summing its digits until the result is a single-digit number. Your task is to determine the final value of 'N' after applying this operation ...
- Ans.
Given an integer, find the final single-digit value after summing its digits iteratively.
Iteratively sum the digits of the given integer until the result is a single-digit number
Output the final single-digit integer for each test case
Handle multiple test cases efficiently
(2 Questions)
Round duration - 30 minutes
Round difficulty - Easy
Timing was 9:30 AM. The interviewer was very nice.
- Q1.
Nth Fibonacci Number Problem Statement
Calculate the Nth term in the Fibonacci sequence, where the sequence is defined as follows:
F(n) = F(n-1) + F(n-2), with initial conditionsF(1) = F(2) = 1.Input:
... - Ans.
Calculate the Nth Fibonacci number efficiently using dynamic programming.
Use dynamic programming to store and reuse previously calculated Fibonacci numbers.
Start with base cases F(1) and F(2) as 1, then calculate subsequent Fibonacci numbers.
Optimize the solution to avoid redundant calculations by storing intermediate results.
Time complexity can be reduced to O(N) using dynamic programming.
Example: For N = 5, the 5th F
- Q2. Write an SQL query to find the second highest salary from a table.
- Ans.
SQL query to find the second highest salary from a table
Use the MAX() function to find the highest salary
Use the NOT IN operator to exclude the highest salary from the results
Order the results in descending order and limit the query to return only the second row
(2 Questions)
Round duration - 30 minutes
Round difficulty - Medium
Timing was 12 PM. Interviewer was not good.
- Q1.
Character Frequency Problem Statement
You are given a string 'S' of length 'N'. Your task is to find the frequency of each character from 'a' to 'z' in the string.
Example:
Input:
S : abcdg
Output:
1...
- Ans.
The task is to find the frequency of each character from 'a' to 'z' in a given string.
Create an array of size 26 to store the frequency of each character from 'a' to 'z'.
Iterate through the string and increment the corresponding index in the array for each character encountered.
Print the array of frequencies as the output for each test case.
- Q2. What is normalization and can you explain the concept of Third Normal Form (3NF)?
- Ans.
Normalization is the process of organizing data in a database to reduce redundancy and improve data integrity.
Normalization is a database design technique used to structure a relational database in a way that reduces data redundancy and improves data integrity.
Third Normal Form (3NF) is a level of database normalization where every non-prime attribute of a table is dependent on the primary key.
To achieve 3NF, a table m...
Interview Preparation Tips
Tip 1 : Do 2 projects.
Tip 2 : Practice data structures programs.
Tip 3 : Take a course on Coding Ninjas.
Tip 1 : Keep it short.
Tip 2 : Do not put false things on resume.
Skills evaluated in this interview
I appeared for an interview in Oct 2020.
(1 Question)
Round duration - 90 minutes
Round difficulty - Easy
There were two section Aptitude and Coding.
- Q1.
Buy and Sell Stock Problem Statement
Imagine you are Harshad Mehta's friend, and you have been given the stock prices of a particular company for the next 'N' days. You can perform up to two buy-and-sell ...
- Ans.
The task is to determine the maximum profit that can be achieved by performing up to two buy-and-sell transactions on a given set of stock prices.
Iterate through the array of stock prices and calculate the maximum profit that can be achieved by buying and selling at different points.
Keep track of the maximum profit after the first transaction and the maximum profit overall by considering different combinations of buy a...
(1 Question)
Round duration - 60 minutes
Round difficulty - Easy
This was the first technical interview.
- Q1.
Pair Sum Problem Statement
You are given an integer array 'ARR' of size 'N' and an integer 'S'. Your task is to find and return a list of all pairs of elements where each sum of a pair equals 'S'.
Note:
... - Ans.
Find pairs of elements in an array that sum up to a given value, sorted in a specific order.
Iterate through the array and for each element, check if the complement (S - current element) exists in a hash set.
Keep track of pairs in a hash set to avoid duplicates.
Sort the pairs based on the criteria mentioned in the question.
Return the sorted list of pairs.
Interview Preparation Tips
Tip 1 : Prepare theory subjects well
Tip 2 : Start doing some development and learn a framework from 2nd year
Tip 1: Mention projects with technologies
Tip 2: Make important words in bold
Skills evaluated in this interview
I applied via Campus Placement and was interviewed in May 2022. There were 4 interview rounds.
Basic dsa questions , basic recursion questions of trees ,graphs and searching algorithms there are some mcq questions that too on dsa
They asked few sql and dsa questions like a open board test
(2 Questions)
- Q1. Sort a vector according to other other vector ?
- Ans.
Sort a vector based on another vector
Use std::sort with a custom comparator function
The comparator function should compare the indices of the elements in the second vector
The first vector should be sorted based on the order of the indices in the second vector
- Q2. String processing question where we need to process a string by using given instructions .
Interview Preparation Tips
Skills evaluated in this interview
Selected
I applied via Company Website and was interviewed in Apr 2023. There were 4 interview rounds.
Leetcode easy, medium
(2 Questions)
- Q1. Cpp , dsa , os, cn, coa
- Q2. Sort 0,1,2 array
- Ans.
Sort an array of strings containing '0', '1', and '2'.
Use counting sort algorithm to count the occurrences of '0', '1', and '2'.
Create a new array with the sorted counts of '0', '1', and '2'.
Join the sorted array back into a single array of strings.
(1 Question)
- Q1. Why should we hire you?
Skills evaluated in this interview
I applied via Campus Placement and was interviewed in Mar 2024. There were 2 interview rounds.
Aptitude and coding of 2 hours
(1 Question)
- Q1. Questions based on sql and dsa
Interview Preparation Tips
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