<>strong>(ab u aab u aba)*
我这样做了,但我希望得到一些关于其正确性的反馈意见:
如果正确的话: 我们能够进一步简化(a u aab u aba)*?
如果不是:我有什么错?
EDIT:似乎我从所有3个最终州都失踪了电子过渡,而我需要一个新国家,这个新国家是初步和最终的,将进入电子过渡的最初状态。 (Kleene Star Rule)。
P.S. Can we also simplify (a u b)*aabab and (a u b)*a(a u b)(a u b)(a u b)(a u b).
我之所以要问,是因为如果没有办法简化/管理,那将是一个荒谬的漫长的《家庭津贴法》。
我可以看到,你的第一个案例简化了,因为你可以把它写成(a(b u ab u ba) * ,但这不一定会帮助。 我仍然想到,你们的外交部像你们所认为的那样,赢得了众多国家的需求。
后两种情况都需要有32个州的联邦调查局,以便跟踪过去5个特点。 差异是,第二个财务概算只有一个终点站,而第三个财务概算为16个。
Recently I discovered two amazing regular expression features: ?: and ?!. I was curious of other neat regex features. So maybe you would like to share some tricky regular expressions.
I need to remove image tags from text, so both versions of the tag: <img src="" ... ></img> <img src="" ... />
How do I, using preg_replace, replace more than one underscore with just one underscore?
I was trying to write a regexp to replace all occurrences of with unless the is already preceeded immediately by a . I m doing this in Ruby 1.8.6 which doesn t support look behind in ...
Specifically, I have an array of strings called val, and want to replace all instances of "%{n}%" in the input with val[n]. More generally, I want the replace value to be a function of the match ...
I have the following log entry that I am processing in PowerShell I m trying to extract all the activity names and durations using the -match operator but I am only getting one match group back. I m ...
I m building a lexical analysis engine in c#. For the most part it is done and works quite well. One of the features of my lexer is that it allows any user to input their own regular expressions. This ...
I need a regex for four-digit numbers separated by comma ("default" can also be a value). Examples: 6755 3452,8767,9865,8766,3454 7678,9876 1234,9867,6876,9865 default Note: "default" ...
