Snap interview questions

PHASE 2 - Feed Sync Now that basic sending and receiving of messages are working, the client team wants to work on the "Feed" screen for messages. The "Feed", in snapchat is a list of conversations that a user is a part of. The feed is sorted by the newest message at the top of the feed.. The client team has asked you to implement the following API: [Java] def sync_feed(user_id: str) -> ???:

PHASE 3 - Privacy Settings To support privacy controls you will: Create a new service that the ConversationService will use to check the relationship between two users. Add a new method to the ConversationService that allows users to update their privacy settings. Add logic to check if a user can send a message to another user based on their privacy settings. from enum import Enum class Privacy(Enum): PUBLIC = "PUBLIC" FRIENDS = "FRIENDS" class ConversationService: def set_privacy(self, user_id, privacy): pass class FriendService: def is_friend(self, user_id, friend_id): def add_friend(self, user_id, friend_id): def remove_friend(self, user_id, friend_id):