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Oportun Interview Questions and Answers

Updated 8 Dec 2024

Q1. Life cycle of angular

Ans.

Angular has a life cycle consisting of several phases that a component goes through from creation to destruction.

  • Angular components go through several life cycle hooks such as ngOnInit, ngOnDestroy, etc.

  • ngOnInit is called after the component has been initialized and its data-bound properties have been checked.

  • ngOnDestroy is called just before the component is destroyed.

  • Other life cycle hooks include ngOnChanges, ngDoCheck, ngAfterContentInit, ngAfterContentChecked, ngAfterVie...read more

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Q2. DP on Stock buy n sell

Ans.

Implement a dynamic programming solution for stock buy and sell problem.

  • Use dynamic programming to find the maximum profit by buying and selling stocks.

  • Keep track of the minimum stock price seen so far and update the maximum profit accordingly.

  • Consider edge cases like no profit or negative profit.

  • Example: Input [7, 1, 5, 3, 6, 4], Output 5 (buy at 1, sell at 6)

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Q3. CAP Theorem explanation wanted

Ans.

CAP Theorem states that in a distributed system, it is impossible to simultaneously achieve consistency, availability, and partition tolerance.

  • Consistency: All nodes in the system have the same data at the same time.

  • Availability: Every request gets a response, even if some nodes are down.

  • Partition Tolerance: The system continues to operate despite network partitions.

  • Examples: MongoDB prioritizes consistency and partition tolerance, while Cassandra prioritizes availability and...read more

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Q4. Dynamo db working style

Ans.

DynamoDB is a fully managed NoSQL database service provided by AWS, designed for high performance and scalability.

  • DynamoDB is schema-less, allowing for flexible data models

  • It offers high availability and durability through replication and automatic backups

  • DynamoDB uses primary keys for data retrieval, with optional secondary indexes for querying

  • It supports ACID transactions for consistency and reliability

  • DynamoDB is designed for low-latency and high-throughput applications

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Q5. Java 8 stream setup

Ans.

Java 8 stream setup involves creating a stream from a collection or array and applying operations like filter, map, and reduce.

  • Create a stream from a collection using stream() method

  • Apply operations like filter, map, and reduce to process elements

  • Use terminal operations like collect or forEach to get the final result

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Q6. Function vs method

Ans.

A function is a standalone block of code that can be called independently, while a method is a function that is associated with a class or object.

  • Functions are standalone blocks of code, while methods are functions associated with classes or objects.

  • Functions can be called independently, while methods are called on specific instances of classes or objects.

  • Functions are defined outside of classes, while methods are defined within classes.

  • Example: function calculateArea() { ......read more

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Q7. Explain OOPS, Inheritance, SQL basics and

Ans.

OOPS is a programming paradigm based on objects, Inheritance is a mechanism in OOPS, SQL basics include querying databases.

  • OOPS stands for Object-Oriented Programming, where data and behavior are encapsulated within objects.

  • Inheritance is a mechanism in OOPS where a class inherits properties and behaviors from another class.

  • SQL basics include querying databases using SELECT, INSERT, UPDATE, DELETE statements.

  • Example: In OOPS, a Car class can inherit properties and behaviors f...read more

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Q8. Explain more about your role Statistical questions as per profile

Ans.

As a Team Manager, I oversee a team's performance, provide guidance and support, and ensure goals are met.

  • Manage team members and delegate tasks effectively

  • Provide coaching and feedback to improve team performance

  • Set goals and monitor progress towards achieving them

  • Handle conflicts and resolve issues within the team

  • Collaborate with other departments to ensure smooth operations

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Q9. Improve a product

Ans.

Implement a user feedback system to gather insights for product improvement.

  • Conduct user surveys to gather feedback on product features and usability.

  • Implement a system for users to submit feedback and suggestions directly within the product.

  • Analyze user behavior data to identify pain points and areas for improvement.

  • Regularly review and prioritize user feedback to make informed product decisions.

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