Counting Duplicates in Strings | Dataford Interview Questions

Write a program to count duplicate characters and duplicate elements in a given string.

Treat each character as an element. Return a dictionary containing only characters that occur at least twice, with their occurrence counts. Character comparison is case-sensitive, and spaces and punctuation must be treated as valid characters.

Function: def count_duplicates(s):. Input is one string, and output is a dictionary mapping duplicate characters to integer counts.

Constraints

0 <= len(s) <= 10^5
s may contain letters, digits, spaces, and punctuation
Character comparison is case-sensitive
Return every character whose frequency is greater than 1

Function Signature

def count_duplicates(s):

Your question is Counting Duplicates in Strings. 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 program to count duplicate characters and duplicate elements in a given string.

Function: def count_duplicates(s):. Input is one string, and output is a dictionary mapping duplicate characters to integer counts.

Constraints

0 <= len(s) <= 10^5
s may contain letters, digits, spaces, and punctuation
Character comparison is case-sensitive
Return every character whose frequency is greater than 1

Function Signature

def count_duplicates(s):

Your question is Counting Duplicates in Strings. 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.