Oracle Software Development Engineer II Interview Questions and Answers

DSA - Leetcode
Easy to Medium

DSA - Leetcode Medium
Problem Solving

System Design of Concurrent Streaming Platform

Q1. Cultural Fit For Company
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Q2. Core Values that you hold
Ans. 
Integrity, teamwork, continuous learning, empathy
• Integrity - always being honest and doing the right thing, even when no one is watching

• Teamwork - collaborating effectively with others to achieve common goals

• Continuous learning - constantly seeking to improve and grow in knowledge and skills

• Empathy - understanding and caring for others' perspectives and feelings
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Q1. Mvc , mapping , rest endpoints
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Q2. Oops concepts from java
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Object-oriented programming concepts in Java
• Encapsulation: bundling data and methods together

• Inheritance: creating new classes from existing ones

• Polymorphism: using a single interface to represent different types

• Abstraction: hiding implementation details and providing a simplified view

• Encapsulation example: using private variables and public methods

• Inheritance example: creating a subclass that inherits properties and m...read more
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Q3. System design ques were asked
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It is Hacker rank test ,asked 2 questions and needs to solve in 1 hour

Q1. Tested problem solving
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Q1. Low level designing
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Q1. It is managerial round
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Prepare DSA very well and also one common question which is very frequently asked ks design Hashmap and also implement LRU cache.

Q1. Tell me about yourself.
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Q1. Decode the string. if integer is present, expand it those many times. ab2[b3[ac]]de --> abbacacacbacacacde
Ans. 
Decode a string by expanding integers to repeat characters within brackets.
• Iterate through the string character by character

• If a digit is encountered, keep track of the number

• When encountering '[', push the current result and number onto the stack

• When encountering ']', repeat the substring inside brackets based on the number on top of the stack

• Continue until the entire string is decoded
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Q2. Maximum length of the subarray which has almost 2 distinct elements
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Find the maximum length of a subarray with almost 2 distinct elements.
• Use a sliding window approach to keep track of the count of distinct elements in the subarray.

• Update the window size based on the number of distinct elements in the subarray.

• Keep track of the maximum length encountered so far.
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Coding test live with medium-hard coding question

1 Question related to tree traversal and another related to finding median in streaming data.