使用Regex

Question

我有几行

例如：

word1-word2-word3-1
word1-word2-word3-23
word1-word2-word3-dr
word1-word2-word3-13-4
word1-word2-word3-drg
word1-word2-word3-word4-4

从以上几行开始，我需要使用Regex

以下几行

word1-word2-word3-1
word1-word2-word3-23
word1-word2-word3-word4-4

即。字符串以＆＃34; - {int}＆＃34;

结尾

Answer 1

您可以使用模式-\d+$

模式意味着我们正在寻找;

1. -\d+ - 连字符和一个或多个数字
2. $断言我们在行尾。

我不知道你在写什么语言，但假设你是用Javascript做的。可以使用下面的代码证明这种模式。

＆＃13;
＆＃13;
"use strict";
var values = [
  "word1-word2-word3-1",
  "word1-word2-word3-23",
  "word1-word2-word3-dr",
  "word1-word2-word3-13-4",
  "word1-word2-word3-drg",
  "word1-word2-word3-word4-4"
];

values.forEach(value => {
  if (/.*-(?!\d+-)\w+-\d+$/.exec(value)) {
    console.log(value + " has - integer at the end!");
  };
});
＆＃13;
＆＃13;
＆＃13;