http://blog.concretesolutions.com.br/2011/12/testinho-numero-2

pizza-contest

import static java.util.Arrays.*;

import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;

public class Pizza {

	public static void main(String[] args) {
		Map<String, List<Integer>> sabores = new HashMap<String, List<Integer>>();

		sabores.put("Renato", asList(4, 5, 4, 5, 4, 3));
		sabores.put("Marcelo", asList(2, 2, 1, 3, 5, 2));
		sabores.put("Lenon", asList(4, 5, 2, 1, 1, 3));
		sabores.put("Renata", asList(4, 5, 1, 1, 3, 4));
		sabores.put("Washington", asList(1, 1, 2, 3, 4, 3));
		sabores.put("Tino", asList(1, 5, 1, 4, 3, 2));

		List<Integer> luca = asList(5, 4, 3, 4, 3, 2);

		String pessoa = "";
		Double distance = Double.MAX_VALUE;

		for (Entry<String, List<Integer>> e : sabores.entrySet()) {

			List<Integer> list = e.getValue();			
			// distância euclidiana
			double d = 0;
			for (int i = 0; i < list.size(); i++) {
				d += Math.pow(list.get(i) - luca.get(i), 2);
			}
			double res = Math.sqrt(d);
			// fim distância euclidiana
			
			if (res < distance) {
				pessoa = e.getKey();
				distance = res;
			}
		}		
		System.out.println(pessoa + " " + distance);
	}
}