/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	    public static String escapeMarkdown(String input) {
        if (input == null) {
            return null;
        }
 
        // Lista de caracteres especiais no Markdown
        String[] markdownChars = {
            "\\", "`", "*", "_", "{", "}", "[", "]",
            "(", ")", "#", "+", "-", ".", "!", "|"
        };
 
        // Escapa cada caractere com uma barra invertida
        for (String ch : markdownChars) {
            input = input.replace(ch, "\\" + ch);
        }
 
        return input;
    }
 
 
	public static void main (String[] args) throws java.lang.Exception
	{
		System.out.println(escapeMarkdown("*foobar*"));
	}
}

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