Reverse Words in a String | Dataford Interview Questions

Leidos systems may receive report text with inconsistent spacing before presenting it to an operator. Given a string, return the words in reverse order without reversing the characters inside any word.

Treat any sequence of spaces as a separator. The result must contain exactly one space between adjacent words and no leading or trailing spaces. If the input contains no words, return an empty string.

Formal Specification

Implement reverse_words(text), where text is a string and the return value is a string. A word is a maximal sequence of non-space characters. The relative character order within each word must remain unchanged, while the order of the words must be reversed.

Constraints

0 <= len(text) <= 10^5
The input contains printable characters and spaces
A word contains one or more non-space characters
The output contains exactly one space between words

Function Signature

def reverse_words(text):

Your question is Reverse Words in a String. Start with the requirements in the Question tab.

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

Problem

Formal Specification

Constraints

0 <= len(text) <= 10^5
The input contains printable characters and spaces
A word contains one or more non-space characters
The output contains exactly one space between words

Function Signature

def reverse_words(text):

Your question is Reverse Words in a String. Start with the requirements in the Question tab.

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