Reverse Every Letter in a String | Dataford Interview Questions

Given a string, reverse every letter in it.

Treat uppercase and lowercase characters as letters, and preserve every non-letter character at its original index. Return the transformed string.

Input/Output: Implement reverse_letters(s), where s is a string and the result is a string.

Example 1: s = "ab-cd" returns "dc-ba" because only letters move.

Example 2: s = "a-bC-dEf-ghIj" returns "j-Ih-gfE-dCba".

Constraints: 0 <= len(s) <= 1000; s contains printable ASCII characters.

def reverse_letters(s):

Your question is Reverse Every Letter 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.

Given a string, reverse every letter in it.

Treat uppercase and lowercase characters as letters, and preserve every non-letter character at its original index. Return the transformed string.

Input/Output: Implement reverse_letters(s), where s is a string and the result is a string.

Example 1: s = "ab-cd" returns "dc-ba" because only letters move.

Example 2: s = "a-bC-dEf-ghIj" returns "j-Ih-gfE-dCba".

Constraints: 0 <= len(s) <= 1000; s contains printable ASCII characters.

def reverse_letters(s):

Your question is Reverse Every Letter 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.