| IndexOfRepeatedChar(String) | Searches a string for an instance of a repeated character. | 
| IndexOfRepeatedChar(String, Char) | Searches a string for a repeated instance of the specified characterToFind. | 
| IndexOfRepeatedChar(String, Int32) | Searches a string for an instance of a repeated character from specified startIndex. | 
| IndexOfRepeatedChar(String, Char, Int32) | Searches a string for a repeated instance of the specified characterToFind from specified startIndex. |