Question

According to infectious disease experts, COVID-19 symptoms can range
from mild, to moderate, and severe. The symptoms are as follows for each
category.
        
        Mild: moderate fever (98.6 F t 100.4 F, respiratory symptoms, 
        aches, pains, and dry cough. 
        
        Moderate: Fever above 100.4, cough, chills, shortness of 
        breather, and tiredness.
        
        Severe: Drop in blood pressure, inflammation, and pneumonia.
        
FOR EXAMPLE: User (healthcare provider) is asked to input a symptom from up above such as "drop in blood pressure" the system then needs to output "possible severe case of COVID-19, please request more confirmatory blood tests." Another example of an input would be "tiredness" this would result in an output of "possible moderate case of COVID-19, please request more confirmatory blood tests."
      
 QUESTION: Write a Java program that prompts a healthcare provider to enter the
        symptoms of a patient based on any of the classifications above. The 
        system then returns the possible classification of COVID-19 above and requests
        for additional confirmatory blood tests.

Answer 1

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//--------------------INPUT/OUTPUT------------------

//-------------------------------------------------------------

import java.util.Scanner;

class Main {

    public static void main(String[] args) {

        //array with mild symptoms

        String[] mild_symptoms = { "moderate fever", "respiratory symptoms", "aches", "pains", "dry cough" };

        //array with moderate symptoms

        String[] moderate_symptoms = { "fever above 100.4", "shortness of breathe", "aches", "chills", "cough",

                "tiredness" };

        

        //array with severe symptoms

        String[] severe_symptoms = { "drop in blood pressure","inflammation", "pneumonia" };

        Scanner scanner=new Scanner(System.in);

        //prompt the user

        System.out.print("Please enter symptoms: ");

        //read input

        String symp=scanner.nextLine().toLowerCase();

        String severity="";

        //search the arrays one by on for symptom

        if (search(mild_symptoms, symp)){

            severity="mild";

        }

        else if(search(moderate_symptoms, symp)){

            severity="moderate";

        }

        else if(search(severe_symptoms, symp)){

            severity="severe";

        }

        

        //check if severity string still empty

        if(severity.equals("")){

            System.out.println("Not a case of COVID-19");

        }

        else{

            System.out.println("possible "+severity+" case of COVID-19, please request more confirmatory blood tests.");

        }

    }

    //a function to search the array for string

    public static boolean search(String[] list, String symptom) {   

        //loop over the array one by one

        for (int i = 0; i < list.length; i++) {

            //checks if current elment equals symptom

            if (list[i].equals(symptom)) {

                return true;

            }

        }

        return false;

    }

}