統(tǒng)計數(shù)據(jù)的類型 ***1.分類變量Catrgorical Variable *** 其變量值是定性的足绅，表現(xiàn)為互不相容的類別或?qū)傩源久巍７诸愖宰兞康膯?..

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...