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我写的是..
假设我们找到一个 7 的正则表达式,那么 reg exp 中 7 的倍数将是 [7|14|21|28]
这看起来合理吗?请告诉我..
[7|14|21|28]匹配任何字符7, |, 1, 4, 2, 8.
[7|14|21|28]
7
|
1
4
2
8
要匹配7or14或21or 28,您应该使用组 ( (...)) 而不是字符集 ( [...]):
14
21
28
(...)
[...]
(7|14|21|28)