Final Part 2

import java.util.*;

public class Main {

    static Scanner s = new Scanner(System.in);

    public static void main(String args[]) {

    }

    public static void startCalculator() {

        System.out.println("What function would you like to run?");
        String function = s.nextLine();
        processUserFunction(function);
    }

    public static void processUserFunction(String func) {

        Map<double[], Double> result;

        switch(func) {
            case "Add":
                result = simpleCalc("Add");
                storeResult("add", result);
                break;
            case "Subtract":
                result = simpleCalc("Subtract");

                break;
            case "Multiply":
                result = simpleCalc("Multiply");

                break;
            case "Divide":
                result = simpleCalc("Divide");

                break;
            case "Compound Interest":
                compoundInterest();
                break;
            case "Simple Interest":
                simpleInterest();
                break;
        }
    }

    public static void storeResult(String str, Map<double[], Double> result) {

    }

    public static Map<double[], Double> simpleCalc(String func) {

        Map<double[], Double> argsAndResult = new HashMap<>();

        System.out.println("First Variable: ");
        double a = s.nextDouble();
        System.out.println("Second Variable");
        double b = s.nextDouble();

        double[] array = {a, b};
        double result = 0;

        switch(func) {
            case "Add":
                result = a + b;
                break;
            case "Subtract":
                result = a - b;
                break;
            case "Multiply":
                result = a * b;
                break;
            case "Divide":
                result = a / b;
                break;
        }

        argsAndResult.put(array, result);
        return argsAndResult;
    }




}