HDFC Bank Interview Questions and Answers

Lists are mutable, ordered collections of items, while tuples are immutable, ordered collections of items.

• Lists are denoted by square brackets [], while tuples are denoted by parentheses ().

• Lists can be modified after creation, while tuples cannot be modified.

• Lists are typically used for collections of similar items that may need to be changed, while tuples are used for fixed collections of items.

• Example: list_example = [1, 2, 3], tuple_example = (4, 5, 6)

Encapsulation is the concept of bundling data and methods that operate on the data into a single unit.

• Encapsulation helps in hiding the internal state of an object and only exposing necessary functionalities.

• It allows for better control over the data by preventing direct access from outside the class.

• Example: A car object encapsulates its properties like speed, fuel level, and methods like start, stop, accelerate.

• Example: A bank account object encapsulates its balance, accoun...read more

Check if a number is a palindrome or not

• Convert the number to a string

• Reverse the string and compare with the original string

• If they are the same, the number is a palindrome

break, pass, and continue are control flow statements used in programming to alter the flow of execution.

• break: used to exit a loop or switch statement

• pass: not a keyword in most programming languages, but can be used as a placeholder for future code

• continue: used to skip the rest of the current iteration in a loop and start the next iteration

Remove duplicates from array of strings

• Create a Set to store unique strings

• Iterate through the array and add each string to the Set

• Convert the Set back to an array to get the unique strings