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I applied via Referral and was interviewed in Dec 2024. There were 2 interview rounds.
Reverse K group linked list
Iterate through the linked list in groups of size K
Reverse each group of K nodes
Connect the reversed groups back together
Find the nearest element on the left side of an array that is greater than the current element.
Iterate through the array from right to left.
Use a stack to keep track of elements that are greater than the current element.
Pop elements from the stack until finding a greater element or the stack is empty.
If a greater element is found, that is the nearest left greater element.
If the stack is empty, there is no nearest left
Validate if a binary tree is a binary search tree
In-order traversal should result in a sorted array
Check if each node's value is within the correct range
Recursively validate left and right subtrees
Consist of 2 coding questions, multiple choice of around 30 question including, math, code, logic and core concepts.
1 hr of coding test mostly on leetcode platform. level : Hard
I am impressed by the company's innovative products, strong company culture, and opportunities for growth.
Innovative products: I am excited about the cutting-edge technology and solutions the company is developing.
Strong company culture: I have heard great things about the supportive and collaborative work environment at the company.
Opportunities for growth: The company's commitment to employee development and career a...
I applied via Recruitment Consulltant and was interviewed in Oct 2023. There was 1 interview round.
Find the maximum path sum in a binary tree
Use recursion to traverse the binary tree and calculate the maximum path sum at each node
At each node, calculate the maximum path sum that includes the current node and return the maximum path sum that does not include the current node
Update a global variable to keep track of the maximum path sum found so far
Sort an array of 0s and 1s in place without using extra space.
Use two pointers approach - one for 0s and one for 1s.
Swap elements at the two pointers until all 0s are on the left and 1s on the right.
I applied via LinkedIn and was interviewed before Jul 2023. There were 4 interview rounds.
You will be given a medium lever coding question. Questions about databricks and azure if had an experiance.
Two DSA questions, you have to solve both with optimal solution.
1 could be from an array other could be a tree or stack.
Sigmoid interview questions for designations
I applied via Naukri.com and was interviewed in Aug 2022. There was 1 interview round.
Find max length of substring with equal 1s and 0s in a binary string.
Use a hash table to store the difference between the count of 1s and 0s seen so far.
If the difference is 0, update the max length seen so far.
If the difference is already in the hash table, update the max length using the current index and the index where the difference was first seen.
Return the max length.
Example: '1100010110' -> 8
Get interview-ready with Top Sigmoid Interview Questions
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I was interviewed in Jun 2017.
An annotation for controller in software engineering.
The annotation for controller is used to define the class as a controller in a software application.
It is typically used in frameworks like Spring MVC or ASP.NET MVC.
The annotation helps in mapping the incoming requests to the appropriate controller methods.
It can also be used to specify the URL path for the controller.
Example: @Controller in Spring MVC, [ApiControll
The annotation for request mapping is used to map HTTP requests to specific methods in a controller class.
The annotation is @RequestMapping
It can be used at the class level to specify a common base URL for all methods in the class
It can also be used at the method level to specify the URL path and HTTP method for a specific method
Additional attributes can be used to further customize the mapping, such as specifying requ...
Front controller is a design pattern used in Spring MVC to handle incoming requests and route them to appropriate handlers.
Front controller acts as a central point of control for handling requests in Spring MVC.
It receives all incoming requests and delegates them to appropriate handlers called controllers.
Front controller provides a consistent way to handle requests and perform common tasks like authentication, logging...
The CSS box model describes the layout and sizing of elements on a web page.
The box model consists of content, padding, border, and margin.
Content refers to the actual content of the element, such as text or images.
Padding is the space between the content and the border.
Border is a line that surrounds the padding and content.
Margin is the space outside the border, separating the element from other elements.
The width an...
Select all div using jQuery
Use the jQuery selector $('div') to select all div elements
This will return a jQuery object containing all the selected div elements
You can then perform operations on the selected div elements using jQuery methods
Use jQuery to change the background color of all ul elements to blue.
Use the jQuery selector to select all ul elements
Use the css() method to change the background color to blue
Use jQuery to change the background color of the first li element to yellow.
Use the :first-child selector to select the first li element
Use the css() method to change the background color to yellow
The output of the given code is [1, 2, 3, 4, 5, 6].
The 'push' method adds an element to the end of the array.
The 'unshift' method adds an element to the beginning of the array.
The 'pop' method removes the last element from the array.
The 'shift' method removes the first element from the array.
The 'final' keyword in Java is used to declare constants, prevent method overriding, and ensure thread safety.
Final variables cannot be reassigned once initialized
Final methods cannot be overridden by subclasses
Final classes cannot be extended by other classes
Final parameters ensure that they cannot be modified within a method
Final fields can be used to achieve thread safety
The question is about method overloading in Java.
Method overloading allows multiple methods with the same name but different parameters.
The method to be called is determined at compile-time based on the arguments passed.
In the given code, there are three overloaded methods with the same name 'getsum'.
The first method takes two integers as arguments.
The second method takes three integers as arguments.
The third method ta...
The program will result in a StackOverflowError due to infinite recursion.
The 'floating' method is recursively calling itself without a base case to stop the recursion.
Each recursive call multiplies the input parameter by the result of the recursive call with a decremented parameter.
This will continue indefinitely until the stack overflows and an error is thrown.
The output of the code is 9.
The code initializes i as 0 and j as 10.
Inside the do-while loop, i is incremented by 1 and j is decremented by 1.
The loop continues until i becomes greater than or equal to j.
Since i is incremented before the comparison and j is decremented before the comparison, the loop runs 9 times.
Therefore, the output is 9.
I was interviewed before Apr 2021.
Round duration - 60 minutes
Round difficulty - Easy
Technical Interview round with questions on CSS and Jquery mainly.
The CSS box model is a design and layout concept that defines the structure and sizing of elements on a web page.
It consists of content, padding, border, and margin around an element.
Content area is where text and images are displayed.
Padding is the space between the content and the border.
Border is the line that goes around the padding and content.
Margin is the space outside the border.
Example: div { width: 200px; pad...
To select all div elements using jQuery, use the selector $('div').
Use the jQuery selector $('div') to select all div elements on the page.
You can also use the find() method to select div elements within a specific parent element.
To perform actions on the selected div elements, use jQuery methods like css(), text(), or addClass().
You can change the background color of all items in JavaScript by selecting all elements and setting their background color property.
Select all elements using document.querySelectorAll()
Loop through the selected elements and set their style.backgroundColor property
Example: document.querySelectorAll('.item').forEach(item => item.style.backgroundColor = 'blue');
Round duration - 60 minutes
Round difficulty - Easy
Technical Interview round with questions on Java mainly.
The final keyword in Java is used to define constants, prevent method overriding, and make a class immutable.
Final variables cannot be reassigned once initialized
Final methods cannot be overridden in subclasses
Final classes cannot be extended
Front Controller in Spring MVC is a design pattern that handles all requests and acts as a central point of control.
Front Controller is a servlet in Spring MVC that receives all requests and then dispatches them to the appropriate handlers.
It helps in centralizing request handling logic, improving code organization and reducing duplication.
Front Controller can perform tasks like authentication, logging, exception handl...
The annotation for request mapping in Java is @RequestMapping.
@RequestMapping annotation is used to map web requests to specific handler methods in Spring MVC.
It can be applied at class level or method level to specify the URL path that the controller will handle.
You can also specify HTTP request methods, headers, parameters, and more using @RequestMapping.
The annotation used for a controller in Java is @RestController.
Used to define a class as a controller in Spring MVC
Automatically serializes return objects into JSON/XML responses
Equivalent to @Controller + @ResponseBody annotations
Round duration - 30 minutes
Round difficulty - Easy
This was a typical HR round.
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.
posted on 22 Sep 2023
Coding testing with 15 questions MCQ based
Aptitude auestions were there
In this round 14 mcq and 2 sql queries were given
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