A reversible prime in any number system is a prime whose "reverse" in that number system is also a prime. For example in the decimal system 73 is a reversible p...

As an emergency rescue team leader of a city, you are given a special map of your country. The map shows several scattered cities connected by some roads. Amoun...

Given a sequence of K integers { N​1​​ , N​2​​ , ..., N​K​​ }. A continuous subsequence is defined to be { Ni​​ , N​i+1​​ , ..., N​j​​ } where 1≤i≤j≤K. The Maxi......

相信大家都喜欢晒被子吧，阳光下暴晒一会，晚上睡觉的时候被子更柔软了，还能闻到一股“太阳的味道”，感觉幸福极了。

A+B for Input-Output Practice(using C++)1.Problem DescriptionYour task is to Calculate a + b. Too

输入1： longrma <- read.csv("longrma.csv",header=T)longrma[sample(nrow(longrma),,replace=F),]结果1： id group time score treatment after tre...

结果中多重比较的展示全部使用字母表示了，虽然许多多种比较方法默认展示方式不同，但是我已经在包中将这些展示方式调整一致为字母。

在linux下一般用while read line与for循环按行读取文件。现有如下test.txt文件：

这里使用ToothGrowth 数据集。它描述了维他命C对Guinea猪牙齿的生长影响。包含了三种不同的剂量（Vitamin C (0.5, 1, and 2 mg)）和相应的两种不同使用方法（ [orange juice (OJ) or ascorbic acid (VC)]）。...

<integer>：100 | 200 | 300 | 400 | 500 | 600 | 700 | 800 | 900