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Given an Interface with sockets, design an algorithm that can handle a large amount of users (no leetcode for this, but the interviewer will explain it very well) Leetcode - easy, medium grade
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T9 Predictive Text Algorithm - Backtracking Leetcode 17 - Letter Combinations the next part of the code is essentially matching the output list and passing it through to their own API. Study Leetcode 17 and you will be golden