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1. Two numbers sum up to a designated number. 2. Find the minimum window in a string that contains a list of characters. 3. How to optimize/parallel a cache for a mobile app. 4. How to design an Excel spreadsheet. 5. How to implement search in G+. 6.

The process was very much in line with what others have said. Take time to prepare and memorize algorithms, including uncommon tree structures. If you are luck, you end up in a loop where nobody asks you puzzle questions. After all the time I spent

The on-site interview had five rounds in a single day. All of them included one coding and one design question. Each review was one hour long. You could choose to work on a whiteboard or a Chromebook. The option of writing code on a Chromebook was p