/// <summary>
/// Counts the amount of certain character occasions in a string.
/// <para>Has a "skip list" which prevents checking a character more than once.
/// If a character is found more than once => skip current character.</para>
/// </summary>
/// <param name="stringToSearchIn"></param>
/// <returns></returns>
public static char CountEachCharacterSearch(string stringToSearchIn)
{
char foundCharacter = default;
List <char> checkedCharacters = new List <char>();
int stringLength = stringToSearchIn.Length;
for (int i = 0; i < stringLength; i++)
{
char currentCharacter = stringToSearchIn[i];
// Don't check the same character twice
if (checkedCharacters.Contains(currentCharacter))
{
continue;
}
// If the character count is higher than 1 - add it to "skip list" so that you don't check it again
if (StringCheck.CharacterRepeats(stringToSearchIn, currentCharacter))
{
checkedCharacters.Add(currentCharacter);
continue;
}
else
// If the count is equal to 1 (can't be lower, because we are checking it from the existing string) => character found
{
foundCharacter = currentCharacter;
break;
}
}
return(foundCharacter);
}