[Solved] C# how to check if a string contains 3 times the same letters in a row [closed]

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Sometimes (rarely) regexes are the response to the question, especially if the question is like this.

bool ism1 = Regex.IsMatch("AABAC", @"(.)\1\1"); // false
bool ism2 = Regex.IsMatch("AAABC", @"(.)\1\1"); // true

Matches any character (.) followed by the first match (\1) twice.

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solved C# how to check if a string contains 3 times the same letters in a row [closed]