package civitas.result;
   
   import java.util.List;
   
   import org.springframework.stereotype.Controller;
   
   @Controller
   public class CalculateStrengths {
   	public void apply(final String[] candidates, final List<List<CandidateResult>> winnerList) {
  		int noneOfABove = candidates.length - 1;
  		Double base = null;
  		for (int i = winnerList.size() - 1; i >= 0; i--) {
  			List<CandidateResult> step = winnerList.get(i);
  			if (base != null) {
  				double avg = 0.0;
  				for (CandidateResult result : step) {
  					avg += result.strength;
  					result.strength *= base;
  				}
  				avg /= step.size();
  				base *= avg;
  			} else {
  				for (CandidateResult result : step) {
  					if (result.candidate == noneOfABove) {
  						base = 10.0;
  					}
  					result.strength = 0.0;
  				}
  			}
  		}
  	}
  }