InnovationM Interview Questions, Process, and Tips

React JS is a JavaScript library for building user interfaces.

• Virtual DOM for efficient updates

• Component-based architecture for reusability

• JSX syntax for easy rendering

• Unidirectional data flow for predictable state management

• Server-side rendering for SEO optimization

Redux is a predictable state container for JavaScript apps.

• Redux is a state management library for JavaScript applications.

• It provides a centralized store to manage the state of an application.

• Redux follows a unidirectional data flow pattern.

• It allows for easy debugging and testing of an application's state.

• Redux can be used with React, Angular, Vue, and other JavaScript frameworks.

Closures are functions that have access to variables in their outer scope.

• Closures are created when a function is defined inside another function.

• The inner function has access to the outer function's variables, even after the outer function has returned.

• Closures can be used to create private variables and functions.

• Example: function outer() { let x = 10; function inner() { console.log(x); } return inner; } const closur

CallStack is a data structure that stores function calls in a stack. Memory Heap is a region of memory where objects are stored.

• CallStack is a LIFO data structure that keeps track of function calls.

• Memory Heap is a large region of memory where objects are allocated.

• Variables and function calls are stored in CallStack while objects are stored in Memory Heap.

• When a function is called, it is added to the top of the CallSt...read more

Activity lifecycle is affected when screen rotates, causing onPause, onStop, onDestroy, onCreate, onStart, and onResume to be called in sequence.

• When screen rotates, onPause is called to pause the activity

• onStop is called next to stop the activity

• onDestroy is called to destroy the activity

• onCreate is called to recreate the activity

• onStart is called to start the activity

• onResume is called to resume the activity

Viewmodel is used to store and manage UI-related data in a lifecycle-conscious way.

• Viewmodel survives configuration changes like screen rotations

• Prevents memory leaks by separating UI data from UI controller

• Improves app performance by reducing the need to reload data

MVVM focuses on separating the UI from the business logic, while Clean architecture emphasizes separation of concerns and layers.

• MVVM stands for Model-View-ViewModel, where the ViewModel acts as a mediator between the View and the Model.

• Clean architecture divides the app into layers (domain, data, presentation) with clear boundaries and dependencies.

• MVVM is more suitable for small to medium-sized projects, while Clean ...read more

Designing an efficient image loading library for Android applications.

• Support for loading images from various sources like network, disk, and resources.

• Caching mechanism to store and retrieve images for faster loading.

• Ability to handle image resizing and scaling for different screen sizes.

• Support for asynchronous loading to prevent UI thread blocking.

• Integration with popular image loading libraries like Picasso or Glid...read more

ViewModel is a class that stores and manages UI-related data in a lifecycle-conscious way.

• ViewModel survives configuration changes such as screen rotations.

• ViewModel is not destroyed when the activity is destroyed, allowing data to be retained.

• ViewModel is typically used to hold and manage data for the UI.

Immutable class is a class whose instances cannot be modified after creation.

• Immutable classes have all their fields marked as final, so they cannot be changed once initialized.

• Immutable classes typically have no setter methods, only getter methods.

• Examples of immutable classes in Java include String, Integer, and LocalDate.

SharedViewModel is a class that is used to share data between fragments in an Android app.

• SharedViewModel is a part of the Android Architecture Components.

• It allows fragments to communicate with each other without directly referencing each other.

• SharedViewModel is typically used to share data between fragments in a single activity.

Aligning organizational culture with strategic goals improves employee performance and business success.

• Clearly communicate strategic goals to all employees

• Lead by example - senior management should embody the desired culture

• Provide training and development opportunities to align employee skills with goals

• Recognize and reward behaviors that support the desired culture

• Encourage open communication and feedback channels

• Re...read more

Aligning organizational culture with strategic goals improves employee performance and business success.

• Clearly communicate strategic goals to all employees

• Lead by example - senior management should embody the desired culture

• Provide training and development opportunities to align employees with company values

• Recognize and reward behaviors that support the desired culture

• Encourage open communication and feedback channel...read more