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Merge esign answer

hey guys it's sharon with another coding interview tutorial and this time we have accounts merge uh this question was actually requested by subscriber so thank you ritwik for the suggestion i hope i'm pronouncing your name correctly and i hope you enjoy this video so if any of you guys have a request for another interview question that you want me to cover go ahead and post that in the comment section and i will try to make this happen so let's get straight into the problem description given a list accounts each element is a list of strings where the first element in each list is a name and the rest of the elements are emails representing emails of the account now we would like to merge these accounts two accounts definitely belong to the same person if they have some email that is common to both accounts so if two accounts have at least one email in common we know that they definitely belong to the same person and we want to merge them now note that even if two accounts have the same name they may belong to two different people as people could have the same name a person can have any number of accounts initially but all of their accounts definitely have the same name so it means that one name can belong to two different people but one email address can only have one owner so an email address cannot belong to two different people with two different names after merging the account return the accounts in the following format the first element of each account is the name and the rest of the elements are email addresses in sorted order the accounts themselves can be returned in any order so we get this list of accounts in each account the first element is the name of the owner of the account the other elements are the email addresses of the account we want to merge the accounts that belong to the same person so in this case the owner of the first account is named john john has two email addresses the second owner is also named john now this john could be the same john and it can be a different john because just like in real life two people can have the same name right so the only way to determine if these two johns are the same person is if they have at least one email in common so in this case uh they do not so we move on right the third owner is also named john now to determine if this new john is a john that we already have in our records we need to look at each account and check if this is an email that we have seen before in this case we have not seen any of these emails before so we move on for this next account this email address is an...