匹配和替换两个单词之间的单词

Question

我有这个字符串，例如：

one two three four START four five four five six END seven

我想在其中搜索单词“four”以用REPLACED替换它，这将给出

one two three four START REPLACED five REPLACED five six END seven

我知道START(.*)END会在分隔符和分隔符之间给出单词。 我试过了START(?<four>)END，但它什么都没有。

我在Vbscript工作。

Answer 1

(?<name>适用于命名组。

您需要的是前瞻和后置断言，以匹配START.*和.*END前后条件，而不实际匹配它们。

Dim input = "one two three four START four five four five six END seven"
Dim output = Regex.Replace(input, "(?<=START.*)four(?=.*END)", "test")

收益率：one two three four START test five test five six END seven

Answer 2

为什么要使用正则表达式？

Dim oldStr = "one two three four START four five four five six END seven"

Dim newStr = oldStr.Replace("four", "REPLACED")