Modak Analytics Software Development Engineer Interview Questions and Answers

Q1. Maximal rectangal
Add your answer
Q2. Loop in linked list
Ans. 
Loop in linked list is a situation where a node points to a previous node in the list, creating an infinite loop.
• Check for loops using Floyd's cycle detection algorithm

• Use two pointers, one moving twice as fast as the other, to detect a loop

• If the fast pointer catches up to the slow pointer, there is a loop
Answered by AI
Add your answer

Q1. Basic hr question regarding your project and all
Add your answer
Q2. He was more interested in what is my thinking pattern
Add your answer

Q1. Multiprocessing
Add your answer

Q1. Django ORM queries, python basic
Add your answer

Q1. Company culture and compensation discussion
Add your answer

Q1. Asked about projects. Quite aloberately.
Add your answer
Q2. What is authorization and authentication?
Ans. 
Authentication verifies the identity of a user, while authorization determines what actions they are allowed to perform.
• Authentication confirms the identity of a user through credentials like passwords or biometrics.

• Authorization determines the level of access a user has to resources or actions.

• Example: Logging into a system with a username and password is authentication, while being able to view or edit specific files
Answered by AI
Add your answer

It was an easy test. It consisted of MCQs and two coding qns. Prepare SQL well. It also had 2 programming question. Both were medium difficukty

Q1. It was mainly focussed on my projects. Be thorough with you resume. But it also depends on the interviewer.
Add your answer

Q1. OOps, C#, MVC, WEBAPI, Azure
Add your answer
Q2. Multiple inheritance concept in OOPs?
Ans. 
Multiple inheritance allows a class to inherit attributes and methods from more than one parent class.
• In multiple inheritance, a class can inherit from two or more parent classes.

• It can lead to the Diamond Problem where a class inherits from two classes that have a common ancestor.

• Languages like C++ support multiple inheritance.

• Example: class ChildClass : public ParentClass1, public ParentClass2 {}
Answered by AI
Add your answer
Q3. What is interface?
Ans. 
An interface in software development defines a contract for classes to implement, specifying methods and properties that must be included.
• Interfaces in programming languages like Java, C#, and TypeScript allow for multiple inheritance by defining a set of methods that a class must implement.

• Interfaces are used to enforce a common structure across different classes, promoting code reusability and maintainability.

• Example...read more
Answered by AI
Add your answer

Create Crud operation using angular with API.

Round one was an online coding test where there were 5 sections :

1 - dsa - medium

2 - Java - Easy

3 - OOP - Easy

4 - Git - Easy

Q1. 1 - where is bean annotation used in springboot ?... In class or method
Ans. 
Bean annotation is used in Spring Boot on class or method to indicate that a method produces a bean to be managed by the Spring container.
• Bean annotation is used on methods within a class to indicate that the method produces a bean to be managed by the Spring container.

• It can also be used at the class level to indicate that the class itself is a Spring bean.

• For example, @Bean annotation can be used on a method that cre...read more
Answered by AI
Add your answer
Q2. Which access modifier to restrict interface method access to only derived or implemented classes
Ans. 
Protected access modifier restricts interface method access to only derived or implemented classes.
• Use 'protected' access modifier to restrict access to only derived or implemented classes

• Protected members are accessible within the same package or by subclasses

• Example: 'protected void methodName() {}' in an interface
Answered by AI
Add your answer
Q3. How does one services interact with other in microservice
Ans. 
Microservices interact with each other through APIs, messaging, or events.
• Microservices communicate with each other through APIs, which can be synchronous or asynchronous.

• Messaging systems like RabbitMQ or Kafka can be used for communication between microservices.

• Events can be used for loosely coupled communication between microservices.

• Service discovery mechanisms like Eureka or Consul help microservices locate and co...read more
Answered by AI
Add your answer
Q4. In an integer array where element represent stock price and index represent days how to detect the best day to buy and best day to sell in O(N)
Ans. 
To detect the best day to buy and sell stock in an integer array representing stock prices and days in O(N).
• Iterate through the array and keep track of the minimum price seen so far.

• Calculate the profit by subtracting the current price from the minimum price.

• Update the maximum profit and best buy/sell days accordingly.

• Return the best buy and sell days to maximize profit.
Answered by AI
Add your answer
Q5. In an integer array find the next greatest number for all and display in O(N)
Ans. 
Find the next greatest number for each integer in an array in O(N) time complexity.
• Iterate through the array from right to left

• Use a stack to keep track of potential next greatest numbers

• Pop elements from the stack that are less than the current element and update their next greatest number to the current element

• Push the current element onto the stack

• Repeat until all elements have a next greatest number
Answered by AI
Add your answer

Q1. Data structures
Add your answer
Q2. Solid Principles
Add your answer
Q3. Single responsibility principle
Ans. 
Single responsibility principle states that a class should have only one reason to change.
• Each class should have only one responsibility

• Helps in making code more maintainable and easier to understand

• Promotes separation of concerns

• Example: A class that handles user authentication should not also handle file management
Answered by AI
Add your answer
Q4. Javascript question
Add your answer
Q5. Object oriented concepts
Add your answer