Mitsubishi Corporation Senior Software Engineer Interview Questions and Answers

Basic python and data structure, time complexity of programs

Q1. Oops concepts in depth
Ans. 
Object-oriented programming principles for organizing and designing code.
• Encapsulation: Bundling data and methods that operate on the data into a single unit.

• Inheritance: Allowing a class to inherit properties and behavior from another class.

• Polymorphism: Ability for objects to take on multiple forms or types.

• Abstraction: Hiding complex implementation details and showing only necessary features.
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Q1. Role: Java+ React Full stack I had 2 rounds of interview so far. 1) First round was all about the fundamentals of react and java. It was a virtual one-o-one. Questions on java String, java classes and ...read more
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Q1. Already shared in my prev response
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Q1. Internal working of hashMap
Ans. 
HashMap is a data structure that stores key-value pairs and uses hashing to efficiently retrieve values.
• HashMap internally uses an array of linked lists to store key-value pairs.

• When a key-value pair is added, the key is hashed to determine the index in the array where it will be stored.

• If multiple keys hash to the same index, a collision occurs and the key-value pairs are stored in a linked list at that index.

• To retri...read more
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Q2. Multithreading [Threads vs Processes]
Ans. 
Threads are lightweight processes within a single process, sharing memory space. Processes are independent instances of a program.
• Threads share memory space, making communication between threads faster and more efficient.

• Processes have their own memory space, making them more isolated and secure.

• Threads are faster to create and terminate compared to processes.

• Processes are more stable and reliable, as a crash in one pr...read more
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Medium level DSA Questions were asked

Q1. Questions about Java8
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Q2. SQL queries and spring boot
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Q1. Current project
Ans. 
Currently working on developing a web-based project management tool for a tech startup.
• Utilizing React for front-end development

• Implementing Node.js for back-end functionality

• Integrating MongoDB for database management
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Hacker rank coding round - string and array - medium to hard

Q1. DSA Round with a focus on strings and trees questions
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Q1. UI coding round
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Q2. Quesitons on JS, TS, Angular and React
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Q1. System Design Round
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Q2. HLD and LLD for Zomato (Food Delivery App)
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Q1. Culture Fitment Round
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Q2. General Techno Managerial Questions
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Q1. Array related problem
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Q1. C# oops related deep question
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Q1. Project Design related questions
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Q1. SQL Linq mvc net core related questions
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Medium leetcode problem on array and linked list. And some theoretical questions

Q1. Core java , collections, object oriented principles . Some small coding questions based on usage of overriding and overloading
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Q1. Multi treading and 1 problem solving question.
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Q1. Discussion with ED : expectations and managerial questions
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Q1. Typical HR questions
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Haker rank test with basic java programming

Q1. Spring and jpa questions
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Q2. Basic string manipulation questions
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Asked basic questions .... To check concept and logic

Q1. SQL query for------ deleting duplicate from table
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Q2. SQL query for second highest salary
Ans. 
SQL query to find second highest salary
• Use ORDER BY and LIMIT to get the highest salary

• Use subquery to exclude the highest salary and get the second highest
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Q1. Basic information and documents verification
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Q1. Roles and responsibilities and queries solving .
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