Use string.Join

[kassemsandarusi]

BingoBoardChecker/src/BingoChecker/IntListExtensions.cs

Line 10 in be2ec82

return new StringBuilder().AppendJoin(", ", list).ToString();

https://docs.microsoft.com/en-us/dotnet/api/system.string.join?view=netframework-4.8#System_String_Join_System_String_System_Collections_Generic_IEnumerable_System_String__

[say25]

I think you mean https://docs.microsoft.com/en-us/dotnet/api/system.string.join?view=netcore-3.1#System_String_Join_System_String_System_Collections_Generic_IEnumerable_System_String

[say25]

Done 304f7e7