Break a string into String Array

BigH61 581 Reputation points
2023-03-15T11:15:26.1+00:00

Is it possible to break the following string into a string array?

"Test string[Page#][TimeDate]that is difficult to break down."

String Array should be

Test string

[Page#]

[TimeDate]

that is difficult to break down.

NOTE The string may or may not contain items with in [].

There is a Set list of items within [] that can be added to the string. For the purposes of this question lets say they are [Page#], [TimeDate], [Time]. The user can also use [] but these items are not to be extracted separately. For example

"Test string[Page#][TimeDate]that is difficult to [break] down."

String Array should be;

Test string

[Page#]

[TimeDate]

that is difficult to [break] down.

Thank you for any assistance.

C#
C#
An object-oriented and type-safe programming language that has its roots in the C family of languages and includes support for component-oriented programming.
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Accepted answer
  1. Viorel 113.7K Reputation points
    2023-03-15T17:56:39.5066667+00:00

    Check an example that uses Regular Expressions:

    string[] items = { "[Page#]", "[TimeDate]", "[Time]" };
    string input = "Test string[Page#][TimeDate]that is difficult to [break] down.";
    
    string j = string.Join( "|", items.Select( i => Regex.Escape( i ) ) );
    string pattern = $@"(?:(?!{j}).)+|{j}";
    
    string[] result = Regex.Matches( input, pattern ).Cast<Match>( ).Select( m => m.Value ).ToArray( );
    

    (In .NET you can omit the .Cast<Match>( )).


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