Bank of America Software Engineer Interview Questions and Answers

Program to convert alternate letters of a sentence to uppercase, excluding whitespace

• Iterate through each character of the sentence

• Check if the character is a letter and if its index is odd

• Convert the letter to uppercase if conditions are met

Program to print top five students in a classroom, handling edge cases

• Create a list of students with their grades

• Sort the list in descending order based on grades

• Print the top five students, handling cases where there are less than five students or ties in grades

I approach solving balanced parenthesis program by using a stack data structure.

• Use a stack to keep track of opening parentheses

• Iterate through the input string and push opening parentheses onto the stack

• When a closing parenthesis is encountered, pop from the stack and check if it matches the closing parenthesis

• If stack is empty at the end and all parentheses are matched, the string is balanced

Different ways to create a table in Python include using pandas, sqlite3, and SQLAlchemy libraries.

• Using pandas library to create a table from a dictionary or list of lists

• Using sqlite3 library to create a table in a SQLite database

• Using SQLAlchemy library to create a table in a SQL database

A program to check if a given string is a palindrome.

• Create a function that takes a string as input.

• Reverse the string and compare it with the original string.

• If they are the same, then the string is a palindrome.

• Example: 'racecar' is a palindrome.

• Example: 'hello' is not a palindrome.

A program to return Fibonacci series using recursion or iteration

• Use recursion to generate Fibonacci series

• Use iteration to generate Fibonacci series

• Handle edge cases like negative input or input of 0 or 1

• Example: Fibonacci series up to 10 - 0, 1, 1, 2, 3, 5, 8, 13, 21, 34

SQL is a relational database management system, while NoSQL is a non-relational database management system.

• 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 for complex queries and transactions, while NoSQL databases are better for large amounts of data and scalability.

• Examples of SQL databases include MySQL, Oracle, and PostgreSQL, while examples of...read more

Custom policies in Mule allow for creating reusable components to apply specific logic to API requests and responses.

• Custom policies can be created using Java or XML in Anypoint Studio.

• They can be applied to API endpoints to enforce security, logging, or transformation logic.

• Examples include rate limiting policies, custom authentication, and data encryption policies.