1.向量元素可以取字符串值

y<-c("a","b","c","d","e","f","g","k")

2.字符串连接

paste("My","job")

3.字符串实例

1.生成向量X1-X6，自动化完成

sep:a character string to separate the terms

labels<-paste("X",1:6,sep = "")

2.生成1到4的字符串

paste(1:4)

3.连接两个字符串，类似Python中print()

paste("Today is",date())

4.生成小数,以.分隔开

collapse:an optional character string to separate the results.

paste(c("a","b"),collapse = '.')