如何从字符串中随机选择然后连接？

Question

如何从向量中随机选择3个单词，然后用单个空格将它们连接起来：

x <-  c("jhonny","devin","Sara","david","Dan")
slt <- sample(x,3,replace = TRUE)
str_to_title(slt)
str_c(slt,sep = " ")

> x <-  c("jhonny","devin","Sara","david","Dan")
> slt <- sample(x,3,replace = TRUE)
> str_to_title(slt)
[1] "David" "Devin" "David"
> str_c(slt,sep = " ")
[1] "david" "devin" "david"

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Answer 1

您可以使用paste()和collapse = " "创建一个字符串，其中包含来自x的三个随机选择的名称(其中x是来自您问题的数据)：

slt <- paste(sample(x, 3, replace = TRUE), collapse = " ")

输出：

#[1] "Dan Sara devin"