面经------Google Onsite(3)
Onsite (4 rounds):n-straight, see if a list is a valid n-straight list,e.g. 3-straight: [1, 2, 3] return True, [1,2,4] return false, [1,2,3,4] return false, [1,2,3,4,5,6] return true, cause it can...
