/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] a) throws java.lang.Exception
	{
		String ONLY_POSITIVE_DELIMITER = "(?<=[+/*^()])|(?=[+/*^()-])|(?<=-(?<!(?:[*/^(]|(?:sin|cos|tan)\\()-))";
		String function = "1-(-2*-1)-3";
		String[] split = function.split(ONLY_POSITIVE_DELIMITER);
 
	    List<String> args = new ArrayList<>(Arrays.asList(split));
	    System.out.println("Splitten der Funktion: "+args);
	}
}

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