/* 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 void main (String[] args) throws java.lang.Exception
	{
		String[] tasks = new String[]{"e", "a", "c", "b", "c", "d", "a", "a"};  
		Set<String> sTasks = new HashSet<String>(Arrays.asList(tasks));
		System.out.println(sTasks);
		Set<String> sTasks1 = new LinkedHashSet<String>(Arrays.asList(tasks));
		System.out.println(sTasks1);
	}
}

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