Ather Energy System Software Engineer Interview Questions and Answers

90 min, coding and analytical skills test

The topic was on was electronics boon or bane to the society

Q1. Explain the data structure of oops
Ans. 
Data structures in OOPs are used to organize and store data in a way that supports the principles of object-oriented programming.
• Data structures in OOPs include classes, objects, arrays, and collections.

• Classes are templates for creating objects, and they define the properties and methods of those objects.

• Objects are instances of classes, and they contain data and behavior.

• Arrays are collections of data of the same typ...read more
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Q2. Gave me a program to solve
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Q1. What are your salary expectations?
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Q1. How many ways we can share data between one app to another app?
Ans. 
There are multiple ways to share data between apps, including using intents, content providers, broadcast receivers, and shared preferences.
• Using Intents: Allows apps to send and receive data through an Intent object.

• Content Providers: Enable apps to share data with other apps by exposing a structured set of data through a URI.

• Broadcast Receivers: Apps can send broadcasts to other apps to share data or events.

• Shared Pr...read more
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Q2. Lifecycle of activity. What would be the state if app is running in the background. When it will be in onStop and onRestart state?
Ans. 
The app lifecycle includes states like running in the background, onStop, and onRestart.
• App running in the background: When the app is not visible but still running, it is in the background state.

• onStop state: Occurs when the activity is no longer visible to the user.

• onRestart state: Follows onStop and is called when the activity is being re-displayed to the user.
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Q3. What is AIDL in Android development?
Ans. 
AIDL stands for Android Interface Definition Language, used for inter-process communication in Android development.
• AIDL is a tool used to define the programming interface that clients and servers use to communicate with each other in Android.

• It allows different Android components to communicate with each other across different processes.

• AIDL files define the methods that can be called remotely, along with the data type
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Q4. Working experience with JNI
Ans. 
JNI stands for Java Native Interface, used to integrate Java code with native code written in languages like C/C++.
• Experience in writing Java code that interacts with native code through JNI

• Understanding of how to create and use JNI libraries

• Knowledge of passing data between Java and native code using JNI functions
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Q5. What is a service?
Ans. 
A service is a piece of code that performs specific tasks or functions to support the overall functionality of a software application.
• Services are often used for tasks such as data processing, communication with external systems, or background tasks.

• Examples of services include web services, REST APIs, and microservices.

• Services can run independently of the user interface and can be accessed by multiple components with
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Q6. Difference between Threads and Coroutines.
Ans. 
Threads are independent sequences of execution within a process, while coroutines are cooperative routines that can pause and resume.
• Threads are managed by the operating system, while coroutines are managed by the programmer.

• Threads run concurrently and can execute in parallel on multiple cores, while coroutines are typically single-threaded.

• Threads have their own stack and memory space, while coroutines share the same...read more
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Q7. How we can perform background tasks in Android?
Ans. 
Background tasks in Android can be performed using services, AsyncTask, JobScheduler, or WorkManager.
• Use Services for long-running tasks in the background

• AsyncTask for short background tasks that need to interact with the UI

• JobScheduler for deferrable background tasks that require network connectivity

• WorkManager for tasks that need to run reliably across different Android versions
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Q1. Question about SQDCM related each topics
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Q1. Casting & forging
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Q2. Casting forging subject any questions
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Q3. Casting pouring
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Q1. I am ready for interview
Ans. 
Ok i am ready for interview
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Q2. I am confidential
Ans. 
Do you best my life is all efforts
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Q1. I am filling very well
Ans. 
My side can do best in company policy
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Q2. I am doing my best
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Q1. I am doing hard working
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Q2. I am taking it good decision during working
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Q1. I am going to safety task
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Q2. I am doing work accordingly to company policy
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Q1. Some Algo question based on Stock buy and sell
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Q2. Projects and puzzles from gfg
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Q1. Intersection of Linked list
Ans. 
Intersection of two linked lists is finding the common node(s) between them.
• Traverse both lists and compare each node to find the common node(s).

• Use a hash table to store the nodes of one list and check for their presence in the other list.

• Calculate the length of both lists and move the pointer of the longer list to match the length of the shorter list, then compare each node.
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Q2. Projects and Puzzles
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Q1. Why This Company
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Q2. What motivates you to work here
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Q3. Some other Hr questions
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Q1. Sort and Merge two linked list
Ans. 
Sort and merge two linked lists
• Traverse both linked lists simultaneously

• Compare the values of nodes and merge them in sorted order

• Handle cases where one list is longer than the other
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Q1. Djisktra Algorithm, cyclic graph, floyd warshal, Memory Threading, Semaphores, Mutex, Round Robin
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Q1. Why you are a good fit? What's your strength? Why you want to join Ola? Past mishaps?
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