УДАЛИ ОТСЮДА

ЧТО ТЫ МНЕ ПИШЕШЬ СЮДА !!!!!!!!!!!!!!!!!!!!!!!!!!????????????????!!!!!!!!!!!!!

ТЫ КТО ????!!!!!

Да, старая школа программирования, легко такое решаем ))) 👌👈👌👈👌👈👌👈👌👈👌👈👌👈👌👈
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I feel like it isn't redundant, as it prevents a faultly solution(see the most popular solution on the C# kata) that will not work if one of the letters is not found in the first three, but is found in the other array members. The random tests should in practice protect against this, but the chance is low, and the solution will still work.

That being said, it is your choice.