Aloha Technology Software Engineer Trainee Interview Questions and Answers

Round duration - 40 minutes
Round difficulty - Medium

Asked about time complexity of algorithm, puzzles, DBMS, cutting edge technologies etc. What are indexes?

Q1. 
Flip Bits Problem Explanation
Given an array of integers ARR of size N, consisting of 0s and 1s, you need to select a sub-array and flip its bits. Your task is to return the maximum count of 1s that can b...read more
Ans. 
Given an array of 0s and 1s, find the maximum count of 1s by flipping a sub-array at most once.
• Iterate through the array and keep track of the maximum count of 1s obtained by flipping a sub-array.

• Consider flipping a sub-array from index i to j and calculate the count of 1s in the resulting array.

• Return the maximum count of 1s obtained by flipping a sub-array at most once.
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Round duration - 20 minutes
Round difficulty - Medium

Asked 1 standard algorithm

Q1. 
Number of Islands Problem Statement
You are provided with a 2-dimensional matrix having N rows and M columns, containing only 1s (land) and 0s (water). Your goal is to determine the number of islands in t...read more
Ans. 
Count the number of islands in a 2D matrix of 1s and 0s.
• Iterate through the matrix and perform depth-first search (DFS) to find connected 1s.

• Mark visited cells to avoid redundant traversal.

• Increment island count whenever a new island is encountered.
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Q1. Questions on oops and dbms
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Q2. What is abstraction
Ans. 
Abstraction is the concept of hiding complex details and showing only the essential features of an object or system.
• Abstraction allows us to focus on what an object does instead of how it does it

• It helps in reducing complexity and improving efficiency

• Examples include abstract classes and interfaces in object-oriented programming
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Q3. What is normalization
Ans. 
Normalization is the process of organizing data in a database to reduce redundancy and improve data integrity.
• Normalization involves breaking down data into smaller, more manageable tables

• It helps in reducing data redundancy by eliminating duplicate data

• Normalization ensures data integrity by enforcing relationships between tables

• There are different levels of normalization such as 1NF, 2NF, 3NF, and BCNF
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Q4. Forms of normalization
Ans. 
Normalization is a process used to organize a database in a way that reduces redundancy and dependency.
• Normalization helps in reducing data redundancy by breaking up tables into smaller ones.

• There are different normal forms like 1NF, 2NF, 3NF, BCNF, and 4NF.

• Normalization ensures data integrity and reduces anomalies in the database.

• Example: Breaking up a table with customer details into separate tables for customer info
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Q5. Diff sql and nosql
Ans. 
SQL is a relational database management system, while NoSQL is a non-relational database management system.
• SQL uses structured query language for querying data, while NoSQL databases use different query languages like MongoDB's query language.

• SQL databases are table-based, with a predefined schema, while NoSQL databases are document-based, key-value pairs, graph databases, or wide-column stores.

• SQL databases are good f...read more
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Q1. The Following are the Laravel Questions:- 1. Laravel Life Cycle 2. OOPs 3. Migration 4. Elquoent 5. Observers 6. Repository 7. Services 8. Composer 9. Git 10. Commands 11. Route 12. Middleware 13. Service...read more
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Q2. The Following are the Vue Js Questions:- 1. Life Cycle 2. Options API 3. Composition API 4. Difference between v-if and v-show 5. Difference between v-model and v-model.lazy 6. Computed Properties 7. Data...read more
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Q1. What is your family background?
Ans. 
My family background is diverse and multicultural, with members from different professions and backgrounds.
• My father is a doctor and my mother is a teacher.

• I have two siblings, one is an engineer and the other is a lawyer.

• We have relatives living in different countries, including the USA, India, and Australia.

• Our family values education and encourages continuous learning.
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Q2. Share details of your previous job.
Ans. 
I worked as a Software Engineer at XYZ Company.
• Developed and maintained software applications using Java and Python.

• Collaborated with cross-functional teams to gather requirements and design solutions.

• Implemented unit tests and performed code reviews to ensure code quality.

• Participated in Agile development processes and attended daily stand-up meetings.

• Troubleshooted and resolved software defects and issues reported by...read more
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Q3. Why are you looking for a change?
Ans. 
Seeking new challenges and growth opportunities in a different environment.
• Looking to expand my skill set and work on more complex projects.

• Interested in joining a company with a strong culture of innovation and collaboration.

• Seeking a role that offers more career advancement opportunities.

• Want to work in a different industry to gain new perspectives and experiences.
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Q4. Why should we hire you?
Ans. 
You should hire me because I have a strong technical background, excellent problem-solving skills, and a passion for software development.
• I have a Bachelor's degree in Computer Science and extensive experience in software development.

• I have a deep understanding of various programming languages and frameworks, including Java, Python, and JavaScript.

• I have a proven track record of delivering high-quality software solutio...read more
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Q5. What are your strengths and weaknesses?
Ans. 
My strengths include problem-solving, attention to detail, and teamwork. My weaknesses include time management and public speaking.
• Strength: Problem-solving - I enjoy analyzing complex problems and finding efficient solutions.

• Strength: Attention to detail - I have a meticulous approach to my work, ensuring accuracy and quality.

• Strength: Teamwork - I thrive in collaborative environments, valuing open communication and c...read more
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Q6. Tell me about yourself.
Ans. 
I am a software engineer with experience in developing and maintaining software applications.
• I have a strong background in programming languages such as Java, C++, and Python.

• I have worked on various projects, including developing web applications and implementing software solutions.

• I am skilled in problem-solving and debugging, ensuring efficient and reliable software performance.

• I am familiar with agile development m...read more
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Q1. 2 Technical rounds with HR round that's good
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Q2. Basic tech questions first 2nd round go little bit inside of code linked list
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Q3. Django total process
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Q1. Salary discussion, previous companies discussion
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Q2. Tell me about your company and roles responsibilities
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Q1. About the skill and job roll.
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Q1. Asked about the current project details
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Q2. Asking about the coding
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Q3. Asking about the current project details
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