WeRize Software Developer Interview Questions and Answers

Q1. DSA question on dynamic programming dp
Add your answer
Q2. Related to java oops and java 8.
Add your answer
Q3. System design on Netflix
Add your answer

Explain about DSA and its example in realtime.

Medium to hard questions based on arrays, dp

Q1. Quick sort algorithm
Ans. 
Quick sort is a popular sorting algorithm that uses divide and conquer strategy.
• Divides array into smaller sub-arrays based on a pivot element

• Recursively sorts sub-arrays

• Combines sorted sub-arrays to get final sorted array

• Time complexity: O(n log n) on average, O(n^2) worst case

• Example: [3, 6, 8, 10, 1, 2, 1] -> [1, 1, 2, 3, 6, 8, 10]
Answered by AI
Add your answer
Q2. Modified rotate a matrix
Ans. 
Rotate a matrix by 90 degrees in place
• Transpose the matrix

• Reverse each row of the transposed matrix
Answered by AI
Add your answer

Building small UI screen application in 1 hr for frontend developer

Q1. Graph traversal question
Add your answer
Q2. React js questions
Add your answer
Q3. Javascript output guessing question
Add your answer

Q1. 2 code and 2 MySQL query
Add your answer

2 Graph question of leetcode

Q1. DSA Questions of leetcode
Add your answer
Q2. DSA Questions
Add your answer

Q1. What is OOPS concepts.
Ans. 
OOPS concepts refer to Object-Oriented Programming principles like inheritance, encapsulation, polymorphism, and abstraction.
• Inheritance: Allows a class to inherit properties and behavior from another class.

• Encapsulation: Bundling data and methods that operate on the data into a single unit.

• Polymorphism: Ability to present the same interface for different data types.

• Abstraction: Hiding the complex implementation detail
Answered by AI
Add your answer
Q2. What is PDO and uses in PHP.
Ans. 
PDO stands for PHP Data Objects, a database access layer providing a uniform method of access to multiple databases.
• PDO is a PHP extension that provides a data-access abstraction layer.

• It supports multiple database systems like MySQL, PostgreSQL, SQLite, etc.

• PDO helps prevent SQL injection attacks by using prepared statements.

• It allows for error handling and supports transactions.

• Example: $pdo = new PDO('mysql:host=loc...read more
Answered by AI
Add your answer

Basic aptitude with tracing program

3 problem with easy to hard