public static void main(String[] args) throws IOException {
        System.out.println("Enter number of variables:");
        numberOfBits = in.nextInt();

        System.out.println("Enter minterms in decimal <-1 to finish>:");
        while (true) {
            int input;
            input = in.nextInt();
            if (input == -1)
                break;
            minterms.add(input);
        }
        System.out.println("Enter don'tcares in decimal <-1 to finish>:");
        while (true) {
            int input;
            input = in.nextInt();
            if (input == -1)
                break;
            dontcares.add(input);
        }
        }
        fillArrayList();
        decimalToBinary();
        doComparisons();

        System.out.println("________________________________________________________________" + "\n");
        System.out.println("Grouping:");
        System.out.println();
        for (int k = 0; k < comparisons.size(); k++) {
            boolean comparisonHasElements = false;

            for (int i = 0; i < comparisons.get(k).size(); i++) {
                if (comparisons.get(k).get(i).isEmpty())
                    continue;
                for (int j = 0; j < comparisons.get(k).get(i).size(); j++) {
                    String binaryRepresentation = comparisons.get(k).get(i).get(j).split(" ", 2)[0];
                    String numericRepresentation = comparisons.get(k).get(i).get(j).split(" ", 2)[1];
                    System.out.println(binaryRepresentation + "\t" + "(" + numericRepresentation + ")");
                }
                comparisonHasElements = true;
                System.out.println("-----------------");
            }
            if (comparisonHasElements) {
                System.out.println("_________________" + "\n");
            }
        }
        if (minterms.isEmpty()==true)
        {
            System.out.println("Expression = 0");
            System.exit(0);
        }

        System.out.println("Prime Implicants:" + "\n");
        for (int i = 0; i < primeImplicants.size(); i++) {
            String binaryRepresentation = primeImplicants.get(i).split(" ", 2)[0];
            String numericRepresentation =  primeImplicants.get(i).split(" ", 2)[1];
            System.out.println(binaryRepresentation + "\t" + "(" + numericRepresentation + ")");
        }
        System.out.println("\n" + "Expression:");
        System.out.println(findExpression(primeImplicants));
        System.out.println("_________________" + "\n");
        System.out.println("Coverage Table:");
        System.out.println();
        printCoverageTable();
        System.out.println("_________________" + "\n" + "\n" + "Essential Prime Implicants:" + "\n");
        countAppearances();
        if (containsOne()) {
            getReducedEssentialImplicants();
            if (!needsCombinations()) {
                for (int i = 1; i <= primeImplicants.size() && !foundCombination; i++)
                    generateCombinations(1, 0, i);
            }
            else {
                for(int i=0; i<essentialPrimeImplicantsContainingOne.size(); i++) {
                    String binaryRepresentation = essentialPrimeImplicantsContainingOne.get(i).split(" ",2)[0];
                    String numericRepresentation = essentialPrimeImplicantsContainingOne.get(i).split(" ",2)[0];
                    System.out.println(binaryRepresentation + "\t" + "(" + numericRepresentation + ")");
                }
                System.out.println("\n" + "Expression:");
                System.out.println(findExpression(essentialPrimeImplicantsContainingOne));

            }
        }
        else {
            for (int i = 1; i <= primeImplicants.size() && !foundCombination; i++)
                generateCombinations(1, 0, i);
        }

    }