package _11._21;

import java.util.*;

public class Task_01 {
//  private static MinMaxAvg getMinMaxAvg(TreeSet<Integer> as) {
//    Integer min = as.first();
//    Integer max = as.last();
//    double avg = 0.0;
//    for (Integer itr : as) {
//      avg += itr;
//    }
//    avg /= as.size();
//
//    return new MinMaxAvg<>(min, max, avg);
//  }
//
//  private static MinMaxAvg getMinMaxAvg(ArrayList<Integer> as) {
//    Integer min = Collections.min(as);
//    Integer max = Collections.max(as);
//    double avg = 0.0;
//    for (Integer itr : as) {
//      avg += itr;
//    }
//    avg /= as.size();
//
//    return new MinMaxAvg<>(min, max, avg);
//  }
//
//  private static MinMaxAvg getMinMaxAvg(Set<Integer> as ) {
//    Integer min = Collections.min(as);
//    Integer max = Collections.max(as);
//    double avg = 0.0;
//    for (Integer itr : as) {
//      avg += itr;
//    }
//    avg /= as.size();
//    return new MinMaxAvg<>(min, max, avg);
//  }

  private static <T extends Number & Comparable<T>> MinMaxAvg<T> getMinMaxAvg(Collection<T> col) {
    T min = Collections.min(col);
    T max = Collections.max(col);
    double avg = 0.0;
    for (T itr : col) {
      avg += itr.doubleValue();
    }
    avg /= col.size();
    return new MinMaxAvg<>(min, max, avg);
  }

  public static void main(String[] args) {
    Integer[] arr = {1, 9, 3, 5, 5};
    System.out.println(getMinMaxAvg(new TreeSet<>(Arrays.asList(arr))));
    System.out.println(getMinMaxAvg(new ArrayList<>(Arrays.asList(arr))));
    System.out.println(getMinMaxAvg(new HashSet<>(Arrays.asList(arr))));
  }
}

class MinMaxAvg<T extends Number>  {
  private T min;
  private T max;
  private double avg;

  public MinMaxAvg(T min, T max, double avg) {
    this.min = min;
    this.max = max;
    this.avg = avg;
  }

  @Override
  public String toString() {
    return "RT{" +
        "min=" + min +
        ", max=" + max +
        ", avg=" + avg +
        '}';
  }
}