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前段时间公司推出一个平台，可以通过SQL语句处理日志从而可以很快得到想要的处理结果。在这之前时需要在集群上提交任务，如果集群排队的任务较多并且我没有借到一个高优的任务名，那等的时间就不确定了，这样不仅严重拖慢了工作的进度，线上的问题也不能及时跟进并找到解决的方法。SQL本科的时…

Given a 32-bit signed integer, reverse digits of an integer. Assume we are dealing with an environment which could only store integers with…

Given a sorted array and a target value, return the index if the target is found. If not, return the index where it would be if it were ins…

CentOS（Community ENTerprise Operating System）是Linux发行版之一，它是来自于Red Hat Enterprise Linux依照开放源代码规定释出的源代码所编译而成。RedHat Enterprise Linux （RHEL）是企…

Given an integer array nums, find the contiguous subarray (containing at least one number) which has the largest sum and return its sum. Ex…

Given an array nums and a value val, remove all instances of that value in-place and return the new length. Do not allocate extra space for…

Given a sorted array nums, remove the duplicates in-place such that each element appear only once and return the new length. Do not allocat…

Given n non-negative integers a1, a2, ..., an , where each represents a point at coordinate (i, ai). n vertical lines are drawn such that t…

Given an array of integers, return indices of the two numbers such that they add up to a specific target. You may assume that each input wo…