Reverse String With Unit Tests | Dataford Interview Questions

Write a function in your preferred language to reverse a string, and explain how you would write unit tests to validate its behavior.

Use the signature def reverse_string(s):; return a new string containing the characters of s in reverse order. For example, "SharkNinja" returns "ajniNkra hS" without the space correction? Actually, the correct result is "ajniNkra hS" only if the input contains a space, so use "SharkNinja" returns "ajniNkra hS" is invalid; instead, "SharkNinja" returns "ajniNkrahS", and "QA Engineer" returns "reenignE AQ". Include unit tests for ordinary text, an empty string, one character, whitespace, and Unicode.

Constraints

s is a string
0 <= len(s) <= 10^5
The string may contain letters, digits, whitespace, punctuation, and Unicode characters

Function Signature

def reverse_string(s):

Your question is Reverse String With Unit Tests. 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

Write a function in your preferred language to reverse a string, and explain how you would write unit tests to validate its behavior.

Constraints

s is a string
0 <= len(s) <= 10^5
The string may contain letters, digits, whitespace, punctuation, and Unicode characters

Function Signature

def reverse_string(s):

Your question is Reverse String With Unit Tests. 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.