Nine Hertz Interview Questions, Process, and Tips for Experienced

State management is the process of managing and updating the state of an application to ensure data consistency and user interface responsiveness.

• State management involves handling the data that an application needs to display and interact with.

• It helps in keeping track of changes in the application's state and updating the user interface accordingly.

• There are various state management solutions available in Flutter, su...read more

Widget tree is a hierarchical structure of widgets in Flutter representing the UI components.

• Widget tree is a collection of nested widgets that define the UI layout.

• Each widget in the tree represents a UI component like buttons, text, images, etc.

• Widgets are arranged in a parent-child relationship, forming a tree-like structure.

• Changes in the widget tree trigger UI updates and rebuilds.

• Example: MaterialApp contains Sca

Activity and Fragment lifecycle manage UI states and transitions in Android apps, ensuring efficient resource use.

• Activity Lifecycle: onCreate(), onStart(), onResume(), onPause(), onStop(), onDestroy(). Example: onCreate() initializes UI.

• Fragment Lifecycle: onAttach(), onCreateView(), onActivityCreated(), onStart(), onResume(), onPause(), onStop(), onDestroyView().

• onPause() is called when the Activity or Fragment is pa...read more

Sorting an array involves arranging its elements in a specific order, typically ascending or descending.

• Use built-in functions like sort() in Python: e.g., sorted(['banana', 'apple', 'cherry']) returns ['apple', 'banana', 'cherry'].

• Implement sorting algorithms like Bubble Sort or Quick Sort for custom solutions.

• Consider edge cases: an empty array should return an empty array, e.g., sort([]) = [].

• Sorting can be case-sen...read more