BNY Software Engineer Interview Questions and Answers

Aptitude was very basic.

Q1. What is constant?
Ans. 
A constant is a value that does not change during the execution of a program.
• Constants are used to store values that remain the same throughout the program.

• They are declared using the 'const' keyword in many programming languages.

• Examples include mathematical constants like pi (3.14159) or physical constants like the speed of light (299,792,458 m/s).
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Q2. What is object oriented programming?
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Q1. Salary Negotiation
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Q2. Work culture description
Ans. 
Our work culture is collaborative, innovative, and focused on continuous learning and growth.
• Encourages teamwork and open communication

• Emphasizes creativity and problem-solving

• Provides opportunities for professional development

• Values diversity and inclusion

• Promotes a healthy work-life balance
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Q1. Tell me about your self
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It was mostly based on the aptitude and coding questions

Q1. Mostly questions on conputer networks and oops and some situational questions were asked
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The coding test comprised 4 questions, held on the Hackerank platform. The time-bound was 90 minutes. I would rate the questions as easy, medium, medium, and hard. You had to solve at least 3 and 80% of the test cases of the last question to qualify for the last round.

Q1. Polymorphism and types of polymorphism.
Ans. 
Polymorphism is the ability of an object to take on many forms. Types include compile-time, runtime, and ad-hoc polymorphism.
• Compile-time polymorphism is achieved through function overloading and templates.

• Runtime polymorphism is achieved through inheritance and virtual functions.

• Ad-hoc polymorphism is achieved through operator overloading and function templates.

• Polymorphism allows for code reusability and flexibility ...read more
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Q2. Relational databases to which I said I had no idea.
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Q3. Binary tree traversal quesiton.
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Q4. Doubly linked list traversal question.
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Q5. Asked about projects.
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Q1. Buy and sell stocks 1
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Q2. Buy and sell stocks 2.
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Q3. An easy puzzle in which the interviewer tries to trick me with my answer. Be confident.
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Q1. String hashing problem, which I solved with KMP using O(n3) solution.
Ans. 
String hashing can be optimized using KMP for efficient substring search, reducing time complexity significantly.
• KMP (Knuth-Morris-Pratt) algorithm preprocesses the pattern to create a longest prefix-suffix (LPS) array.

• The LPS array helps skip unnecessary comparisons, improving efficiency from O(n^3) to O(n + m), where n is text length and m is pattern length.

• Example: For pattern 'ABABAC', the LPS array would be [0, 0,...read more
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Q2. Contributions to open source communities.
Ans. 
Contributed to open source communities by developing and maintaining projects.
• Developed and maintained a Python package for data analysis and visualization

• Contributed to a popular JavaScript library by fixing bugs and adding new features

• Participated in open source hackathons and contributed to various projects

• Provided support and guidance to new contributors in the community
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Q3. JEE Mains rank, KVPY rank.
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