ecimal 数据类型最多可存储 38 个数字,所有数字都能够放到小数点的右边.decimal 数据类型存储了一个准确(精确)的数字表达法:不存储值的近似值. 定义 decimal 的列.变量和参数的两种特性如下: · p 小数点左边和右边数字之和,不包括小数点.如 123.45,则 p=5,s=2. 指定精度或对象能够控制的数字个数. · s 指定可放到小数点右边的小数位数或数字个数. p 和 s 必须遵守以下规则:0 <= s <= p <=
Given an array with n objects colored red, white or blue, sort them so that objects of the same color are adjacent, with the colors in the order red, white and blue. Here, we will use the integers 0, 1, and 2 to represent the color red, white, and bl
Logistic regression is a method for classifying data into discrete outcomes. For example, we might use logistic regression to classify an email as spam or not spam. In this module, we introduce the notion of classification, the cost function for logi
冒泡排序 将一个不规则的数组按从小到大的顺序进行排序 data = [10,4,33,21,54,3,8,11,5,22,2,1,17,13,6] #第一次循环,最后一个数字不需要循环,因为最大值已经放到最右边 第二次循环后面两个数字都不需要循环,因为第二大的数字已经放到倒数第二个 for j in range(1,len(data)): print (j) for i in range(len(data)-j): if data[i] > data[i+1]: tmp = data[i+1]
