ION Group Interview Questions, Process, and Tips

Good expirience in technical round test

Q1. Introduce yourself
Ans. 
I am a highly motivated and detail-oriented analyst with a strong background in data analysis and problem-solving.
• I have a Bachelor's degree in Statistics from XYZ University.

• I have 3 years of experience working as a data analyst at ABC Company.

• I am proficient in SQL, Excel, and data visualization tools like Tableau.

• I have a proven track record of delivering actionable insights to drive business decisions.
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Q1. Mostly behavioural questions, e.g., what are your weaknesses, strengths, tell me about yourself.
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Puzzle questions, and a coding question regarding vector of strings.

Coding test consisting of 4 problems, and some aptitude problems

Q1. Related to project, Resume and DSA
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Case Study related to ethics and values

Related to new technologies, within 1hr it will complete

Q1. DSA, Projects and fundamentals (OS, DBMS)
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Q1. What challenges recently, how you resolved that problem?
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2 coding question with 18 aptitude questions

Q1. Question around dsa oops were Asked
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2 EASY CODES WERE THERE

There was aptitude ques as well as 2 coding ques asking the dp concepts.

Q1. OOPS concepts were asked
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Q2. 4 pillars of OOPS
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Encapsulation, Inheritance, Polymorphism, Abstraction are the 4 pillars of OOPS
• Encapsulation: Bundling data and methods that operate on the data into a single unit. Example: Class in Java

• Inheritance: Ability of a class to inherit properties and behavior from another class. Example: Parent class and child class relationship

• Polymorphism: Ability to present the same interface for different data types. Example: Method over...read more
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Q3. PUZZLES were asked
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Q4. What is a trie
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A trie is a tree data structure used for storing a dynamic set of strings.
• Trie stands for retrieval tree or prefix tree

• Each node in a trie represents a single character

• Tries are commonly used in autocomplete features and spell checkers
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Q5. What data structure you would use to store phone number along side with names
Ans. 
Use a hash table to store phone numbers alongside names for quick lookups.
• Use a hash table where the keys are the phone numbers and the values are the corresponding names.

• This allows for constant time lookups of names based on phone numbers.

• Example: {"555-1234": "John Doe", "555-5678": "Jane Smith"}
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