[英]R: Test if one character vector is contained in another in the same order
[英]How to replace characters contained in a vector with another single character using R
我有以下字符串:
x <- "KDDADQHRQDKWKDEHENRFKDEFVDEKKK"
我想要做的是将该字符串中的字符替换为?
如果它们包含在此向量中:
repo <- c("R", "H", "K", "D", "E")
结果是:
???A?QHRQ??W?????N?F???FV?????
我还想要negation
版本, repo
是用?
.
导致KDD?D?HR?DK?KDEHE?R?KDE??DEKKK
我怎样才能用 R 实现这个目标?
我们可以使用带有正则表达式字符 class 的gsub()
:
x <- "KDDADQHRQDKWKDEHENRFKDEFVDEKKK"
repo <- c("R", "H", "K", "D", "E")
regex = paste0("[", paste(repo, collapse=""), "]")
output <- gsub(regex, "?", x)
output
[1] "???A?Q??Q??W?????N?F???FV?????"
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