How to Answer Graph Search Algorithm in a Meta Interview

To implement a graph search algorithm for finding the shortest path between two users in a social network, I would first represent the users as nodes and their connections as edges in a graph. I would use an adjacency list for efficient space usage, especially given the potentially large number of users. For the search algorithm, I would choose Dijkstra's algorithm because it efficiently finds the shortest path in weighted graphs, which can represent the strength of user connections. I would initialize a priority queue to keep track of the shortest distance to each user as we explore their connections. By focusing on the user connections dynamically, I can ensure we find the optimal path effectively.