Merging User Accounts with Disjoint Set Union and Email Mapping

Problem Statement Given a list accounts where each element accounts[i] is a list of strings, the first element accounts[i][0] is a name, and the remaining elements are email addresses belonging to that account. The goal is to merge accounts. Two accounts belong to the same person if they share atleast one email address. Note that accounts with ...

Posted on Fri, 21 Aug 2026 16:15:37 +0000 by bruceg