Reversing a String | Dataford Interview Questions

Nativo content previews may contain inconsistent spaces, tabs, or line breaks. Implement a function that returns the 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 output. If the input contains no words, return an empty string.

Formal Specification

Given a string s, return a string containing the words of s in reverse order. The output must contain one ASCII space between adjacent words and no leading or trailing spaces.

Constraints

0 <= len(s) <= 10^5
Whitespace may appear at the beginning, end, or between words
Words are maximal sequences of non-whitespace characters
The output contains exactly one space between words

Function Signature

def reverse_words(s):

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