Google OA It’s the original question again, ten minutes passed immediately. I feel that Google's OA has not changed much over the years. It is basically the same set of question types that come and go. If you have reviewed the question bank several times before, you can basically recognize it at a glance. I have done Google OA about a dozen times, and I have also sorted out some question banks and interviews, so I basically didn’t get stuck on the questions this time. There are two questions in this OA, and the ideas are actually relatively straightforward.
Google OA Q1
Problem-solving ideas
Each T can jump to the right several times, 3 spaces each time. When it encounters a C, it will be counted as the answer. A C is only counted once. So obviously we only need to consider the position of each thing in the sense of modulo 3. For a C, if a T appears to the left of it, then it can be counted in the answer. So when we encounter a T, mark vis[i % 3] as 1, and when we encounter a subsequent C, we will see if vis[i% 3] also exists.
Google OA Q2
Problem-solving ideas
You can select a group of numbers. This group of numbers needs to meet the requirement that at least one number appears in all of them. So obviously we can just count how many times 0~9 appears. If a number is such as 55, 5 must only be counted as a contribution once, otherwise it will be counted as heavy, and finally the one that appears the most will be returned.
Google OA on-the-spot questions are actually quite common
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