docs: @Pure
  	public static String[] split(char leftSeparator, char rightSeparator, String str) {
  		final SplitSeparatorToArrayAlgorithm algo = new SplitSeparatorToArrayAlgorithm();
  		splitSeparatorAlgorithm(leftSeparator, rightSeparator, str, algo);
  		return algo.toArray();
  	}