EPAM Systems Lead Software Engineer Interview Questions, Process, and Tips

Codility- Angular - 2 questions, complete code for html, ts files

Q1. SOLID principles
Add your answer
Q2. Prototypes with examples, create a prototype that removes duplicate words from a sentence
Ans. 
Prototype to remove duplicate words from a sentence using an array of strings
• Create a function that takes in a sentence as input

• Split the sentence into an array of words

• Use a Set data structure to store unique words

• Iterate through the array of words and add each word to the Set

• Convert the Set back to an array to get the unique words

• Join the unique words back into a sentence
Answered by AI
Add your answer
Q3. Union types and intersection Types
Add your answer
Q4. Utility types- Omit and Partial
Add your answer
Q5. Angular Change Detection
Add your answer
Q6. ZoneJS and Signals
Add your answer
Q7. ViewChild and ViewChildren
Add your answer
Q8. View Encapsulation
Add your answer
Q9. Subject and Behaviour Subject
Add your answer
Q10. Dynamic Component Loading
Add your answer
Q11. MergeMap and SwitchMap
Add your answer
Q12. Performance tuning in Angular
Ans. 
Performance tuning in Angular involves optimizing code, reducing load times, and improving user experience.
• Use lazy loading to load modules only when needed

• Minimize the number of HTTP requests by combining files and using caching

• Optimize change detection by using OnPush strategy

• Avoid unnecessary DOM manipulations and use trackBy function in ngFor loops

• Use AOT compilation to reduce bundle size and improve load times
Answered by AI
Add your answer

Q1. Design Cache in Java
Ans. 
Designing a cache in Java involves creating a data structure to store frequently accessed data for quick retrieval.
• Use a HashMap to store key-value pairs for quick access

• Implement a LRU (Least Recently Used) algorithm to remove least used items when cache is full

• Consider thread safety when implementing cache to handle concurrent access

• Set a maximum size for the cache to prevent it from growing too large
Answered by AI
Add your answer
Q2. Stream API Coding problem
Ans. 
Using Stream API to solve coding problem with array of strings
• Use Stream API to easily manipulate and process elements in the array

• Leverage methods like filter, map, and reduce to perform operations on the array

• Ensure to understand the functional programming concepts behind Stream API
Answered by AI
Add your answer

Coding Round- Springboot related questions on annotations

Q1. Questions about SOLID
Add your answer
Q2. Questions about mockito and whats new in java 11
Add your answer

LRU Cache Design
Merge two Singly Sorted Linked List
Right View of a Binary Tree

Microservice Design Pattern
Tiny URL System Design

Q1. Overall Technical Experience & Expertise
Add your answer