code: public static char[] asCharacterTypeArray(List<Character> input) {
  		char[] result = new char[input.size()];
  
  		for (int i = 0; i < result.length; i++) {
  			result[i] = input.get(i);
  		}
  
  		return result;
  	}
docs: As character type array.
  
  @param input the input
  @return the char[]