Let's write a simple markdown parser function that will take in a single line of markdown and be translated into the appropriate HTML.

Here is the answer in Java with appropriate comments for understanding

Explanation:

import java. util. Scanner;

public class Hash {

public static void main (String[] args) {

System. out. print ("Enter a string : ");

Scanner scanner = new Scanner (System. in);

String s = scanner. nextLine (); / /read string

int k=s. lastIndexOf ('#'), count=0; //find last occurence of # then take the next part

String s2="", s3="";

for (int i=0; i
{

if (s. charAt (i) = ='#')

count++; //count the occurence of # of level of heading h1, h2, h3, ...

}

for (int j=k+1; j
{

s2+=s. charAt (j); //take the remainging string after #

}

/ / System. out. println (k);

//System. out. println (count);

if (count<=6) / /if it is valid heading

{

s3=""+s2+"";

System. out. println (s3);

}

else

System. out. println ("Invalid header");

}

}