Word Transformation Rules | Dataford Interview Questions

Your question is Word Transformation Rules. Start with the requirements on the right.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.

Problem

Circle payment operations receive a comma-separated list of labels that must be normalized before being displayed. Given a string of non-empty words separated by a comma and optional spaces, transform each word according to its length:

Reverse the word if its length is even.
Convert the word to uppercase if its length is odd.
Join the transformed words using exactly ", " as the separator.

Formal Specification

Implement transform_words(text), which accepts a string text and returns a string. Words contain alphabetic characters only. The input contains one or more words separated by commas, and each comma may be followed by zero or more spaces. The output must contain the same number of words, separated by exactly one comma and one space.

Constraints

1 <= len(text) <= 10^5
The input contains at least one word
Words contain only alphabetic characters
Words are separated by commas and optional spaces
There are no leading or trailing commas or spaces

Function Signature

def transform_words(text):

Your question is Word Transformation Rules. Start with the requirements on the right.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.

Reverse the word if its length is even.
Convert the word to uppercase if its length is odd.
Join the transformed words using exactly ", " as the separator.

Formal Specification

Constraints

1 <= len(text) <= 10^5
The input contains at least one word
Words contain only alphabetic characters
Words are separated by commas and optional spaces
There are no leading or trailing commas or spaces

Function Signature

def transform_words(text):