Savex Technologies Interview Questions and Answers

Key components of frontend system design include user interface, data management, state management, and performance optimization.

• User Interface: Designing the layout, navigation, and visual elements of the frontend.

• Data Management: Handling data fetching, storage, and manipulation within the frontend.

• State Management: Managing the state of the application to ensure data consistency and reactivity.

• Performance Optimization: Optimizing the frontend code and assets for faster loa...read more

Use two threads to print numbers 1 to 10, with Thread A printing odd numbers and Thread B printing even numbers.

• Create two threads, one for odd numbers and one for even numbers

• Use a shared variable to keep track of the current number being printed

• Use synchronization mechanisms like mutex or semaphore to ensure proper sequencing of numbers

JavaScript is a popular programming language used for web development. ES6 modules are a way to organize and reuse code in JavaScript.

• JavaScript is a high-level, interpreted programming language commonly used for client-side web development.

• ES6 modules allow developers to split their code into separate files and import/export functions, variables, and classes between them.

• ES6 introduced 'import' and 'export' keywords for module management.

• Example: 'export function myFunction(...read more

A date picker in JavaScript allows users to select a date from a calendar interface.

• Use HTML input element with type 'date' for modern browsers

• For older browsers, use a JavaScript library like jQuery UI Datepicker

• Implement validation to ensure selected date is within acceptable range

Sort an array of 0s, 1s, and 2s and find the left view of a binary tree.

• To sort the array of 0s, 1s, and 2s, you can use the Dutch National Flag algorithm which sorts the array in a single pass.

• To find the left view of a binary tree, perform a level order traversal and keep track of the first node at each level.

HashMap is implemented using an array of linked lists to store key-value pairs.

• HashMap consists of an array of buckets, each containing a linked list of key-value pairs.

• Hashing function is used to determine the index of the bucket where a key-value pair will be stored.

• Collision resolution techniques like chaining or open addressing are used to handle collisions.

• HashMap allows null keys and values, but only one null key.

• Example: HashMap map = new HashMap<>();