Find Repeating Characters | Dataford Interview Questions

Given the word "Interview", find the repeating characters.

Implement the function below. Treat uppercase and lowercase letters as equivalent, return each repeating character once, use lowercase in the output, and preserve the order of its first appearance.

Constraints

1 <= len(word) <= 10000
word contains alphabetic English characters only
Matching is case-insensitive
Return characters in order of first appearance
Each repeating character must appear once in the output

Function Signature

def find_repeating_characters(word):

Your question is Find Repeating Characters. 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

Given the word "Interview", find the repeating characters.

Implement the function below. Treat uppercase and lowercase letters as equivalent, return each repeating character once, use lowercase in the output, and preserve the order of its first appearance.

Constraints

1 <= len(word) <= 10000
word contains alphabetic English characters only
Matching is case-insensitive
Return characters in order of first appearance
Each repeating character must appear once in the output

Function Signature

def find_repeating_characters(word):

Your question is Find Repeating Characters. 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.