CODEWITHSUNDEEP
c#regex
Bobbler
Bobbler

Reputation: 643

Parse string using regular expression in C#

I need a regular expression to parse 3 sections out of the following strings:

"Hello World 12 7" -> I want ["Hello World", "12", "7"]
"Goodbye -4 72" -> I want ["Goodbye", "-4", "72"]

The text part can have any number of words and both numbers can be negative.

Many thanks in advance.

Upvotes: 2

Views: 3366

Answers (2)

The fourth bird
The fourth bird

Reputation: 163297

As an alternative you could match the values:

(?:(?:[A-Z][a-z]+ )*(?:[A-Z][a-z]+)|-?\d+)

That would match:

  • (?: Non capturing group
    • (?: Non capturing group
      • [A-Z][a-z]+ Uppercase character followed by one or more lowercase characters and a whitespace
    • )* Close group and repeat zero or more times
    • (?: Non capturing group
      • [A-Z][a-z]+ Uppercase character followed by one or more lowercase characters
    • ) Close group
    • | Or
    • -?\d+ Optional dash followed by one or more digits
  • ) Close group

Demo C#

Upvotes: 0

Srdjan M.
Srdjan M.

Reputation: 3405

You can use method Regex.Split() and regex (?i) (?![a-z]).

Details:

  • (?i) Case insensitive
  • (?!) Negative lookahead, match space not followed by [a-z]

C# code:

string[] substrings = Regex.Split(input, "(?i) (?![a-z])");

Output:

["Hello World", "12", "7"]
["Goodbye", "-4", "72"]

Code demo

Upvotes: 2

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