统计数据的类型 ***1.分类变量Catrgorical Variable *** 其变量值是定性的，表现为互不相容的类别或属性。分类自变量的哑...

Given an array of integers, every element appears twice except for one. ...

Given an array of integers that is already sorted in ascending order, fi...

Given a binary array, find the maximum number of consecutive 1s in this ...

283.Move Zeroes Given an array nums, write a function to move all 0's to...