Write a program to parse the molecule and get the atoms count ? C6H12OH {C=6, O=1, H=13}

Question

can u please help me with solution in java

Answer 1

Pavan M

https://code.sololearn.com/cJASF99R8boJ/?ref=app

Answer 2

Hmm, good, good. Let me try and see what I can come up with.

Answer 3

Please show your attempts at solving this problem.

Answer 4

class ParseMolecule

{    public static void main(String s[])
    {
        System.out.println("The atoms count in the molecule C6H12OH is :" +getElementsMap("C6H12OH"));

    }

public static Map<String, Integer> getElementsMap(String molecule) { 

Answer 5

Thank you so much. Hatsy

Answer 6

import java.util.regex.*;
import java.util.*;

public class moleue_value

import java.util.regex.*;
import java.util.*;

public class moleue_value
{
public static void main(String s[])
{
String str = "C2H12oH";
Pattern p = Pattern.compile("(C|H|o)([0-9]*)");
Matcher m = p.matcher(str);
Map <String, Integer> Atoms = new HashMap<>();
while (m.find()) {
String element = m.group(1);
Integer count = Integer.parseInt(m.group(2).equals("") ? "1" : m.group(2));
Atoms.put(element, count + (Atoms.get(element) == null ? 0 : Atoms.get(element)));
}
System.out.println(Atoms);
}
}