Character Frequency and First Index | Dataford Interview Questions

Given a string, how would you compute the frequency of each character and also return the first index where each character occurs?

Implement character_stats(s). Treat characters as case-sensitive, preserve spaces and punctuation, and return a dictionary mapping each character to [frequency, first_index].

Input: a string s. Output: a dictionary whose keys are the distinct characters in s.

Constraints

0 <= len(s) <= 1000
s may contain letters, digits, spaces, and punctuation
Characters are compared exactly, including case and whitespace

Function Signature

def character_stats(s):

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