python实现代码 # -*- coding: utf-8 -*- import math def get_average(records): """ 平均值 """ return sum(records) / len(records) def get_variance(records): """ 方差 反映一个数据集的离散程度 "&quo
Excel can sort records according to any column. Now you are supposed to imitate this function. Excel可以根据任一列对记录进行排序,现在你需要来模仿这个功能 Input Specification: Each input file contains one test case. For each case, the first line contains two