coinbase作为老牌的加密货币企业，近期在北美逆势开启招聘。平台用的codesignal，70分钟需要做完4道题。不幸的是，每个的人的题库都是随机的。我们来节选其中若干道题来看看难度

Given a matrix of integers, with each elementcontaiing either o , 1 ,or 2 , your task is to find the

You are given a string binarystring consisting of'o's and '1's, as well as an array of stringsrequests

Given a range of numbers [left, right] , both endsinclusive, where 1oo ≤ left ≤ right ≤ 999

我们轻松的完成了4道题

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