Introduction - If you have any usage issues, please Google them yourself
Given N (1 ≤ N ≤ 32767) day turnover a1, a2, a3, ... ... an. Defines the minimum volatility value: the smallest fluctuations in the value of the day = min {| one day before the day s turnover- the day turnover |}. in particular, the first day shall be the minimum fluctuations in the value of a1. find the N-day fluctuations in value and the minimum.