R帮助错误

Question

我正在使用R进行家庭作业，并且下面有此代码。向量B基本上是从向量a中的字符串中删除白色空间。然后，向量C将使用白色空间将B中的字符串拆分。然后，我要对c进行排序。但是我必须将其转换为其他简单的原子向量进行排序。但是当我这样做时，我会在下面说一个错误。

a <- c("Chpater 5 ", "Green Eggs and Ham", "Dr. Seuss ", "That Sam-I-am! ", "p. 25")
a
b<-str_trim (a, side = "both")
b
library (stringr)
c<-str_split (b, pattern = " ")
c
sort (c)
unlist ( str_split (c, pattern = " "))

这是我从上面的最后一个代码中获得的结果。

 [1] "c("Chpater"," ""5")"         "c("Green","   ""Eggs","     
 [5] ""and","       ""Ham")"       "c("Dr.","     ""Seuss")"    
 [9] "c("That","    ""Sam-I-am!")" "c("p.","      ""25")
sort (c)

但是，当我将C转换为简单的原子向量时，我不会得到可变C的排序。以下是我运行该行

时收到的消息

> unlist ( str_split (c, pattern = " "))
Error in stri_split_regex(string, pattern, n = n, simplify = simplify,  : 
 argument `str` should be a character vector (or an object coercible to)
> sort (c)
Error in sort.int(x, na.last = na.last, decreasing = decreasing, ...) : 
 'x' must be atomic 

Answer 1

## You need to unlist vector c and sort as below:
sort(unlist(c))
#[1] "25"        "5"         "and"       "Chpater"   "Dr."       "Eggs"     
#[7] "Green"     "Ham"       "p."        "Sam-I-am!" "Seuss"     "That"