Reverse Sentence With Word Order | Dataford Interview Questions

An applied AI annotation workflows may receive sentences with inconsistent spacing before they are displayed or evaluated. Given a string, return the sentence with its words in reverse order, separated by exactly one space.

A word is any maximal sequence of non-whitespace characters. Leading, trailing, and repeated whitespace must not appear in the result. Preserve every character within each word, including punctuation, digits, and symbols.

Formal Specification

Implement reverse_sentence(s), where s is a string. Return a string containing the words from s in reverse order. If s contains no words, return the empty string.

Constraints

0 <= len(s) <= 10^5
s contains printable characters and whitespace
A word is a maximal sequence of non-whitespace characters
Word characters must be preserved exactly

Function Signature

def reverse_sentence(s):

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