Most Frequently Co-Played Artists | Dataford Interview Questions

Given a list of user streaming sessions, write an algorithm to find the most frequently co-played artists.

Implement most_frequent_co_played(sessions), where sessions is a list of lists of artist names. Count each unordered artist pair at most once per session, even if an artist appears repeatedly. Return all pairs with the maximum count, with each pair alphabetically ordered and the result lexicographically sorted. Return an empty list when no session contains at least two distinct artists.

Constraints

0 <= len(sessions) <= 500
0 <= len(sessions[i]) <= 100
Artist names are non-empty strings
Artist names are compared case-sensitively
Return every pair tied for the maximum count

Function Signature

def most_frequent_co_played(sessions):

Your question is Most Frequently Co-Played Artists. 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 a list of user streaming sessions, write an algorithm to find the most frequently co-played artists.

Constraints

0 <= len(sessions) <= 500
0 <= len(sessions[i]) <= 100
Artist names are non-empty strings
Artist names are compared case-sensitively
Return every pair tied for the maximum count

Function Signature

def most_frequent_co_played(sessions):

Your question is Most Frequently Co-Played Artists. 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.