//
// Lambda.java: illustrate using Lambda expressions
//

import java.util.*;
import java.util.stream.*;

public class Lambda {
   public static void main(String[] args) {
      int[] data = {3, -5, 4, 18};
      List<Integer> nums = new ArrayList<Integer>();
      for(int x: data)
         nums.add(x);
      
      // print all numbers
      System.out.println("Original numbers:");
      nums.forEach(x -> System.out.print(x + " "));
      System.out.println();
      System.out.println("-----");

      // sort high to low and print
      nums.sort((a, b) -> b - a);
      System.out.println("Numbers from high to low:");
      nums.forEach(x -> System.out.print(x + " "));
      System.out.println();
      System.out.println("-----");

      System.out.println("0 through 24:");
      nums = IntStream.range(0, 25).boxed().collect(Collectors.toList());
      nums.forEach(x -> System.out.print(x + " "));
      System.out.println();
      System.out.println("-----");

      System.out.println("First ten squares:");
      nums = IntStream.range(0, 10).map(n -> n * n).boxed()
         .collect(Collectors.toList());
      nums.forEach(x -> System.out.print(x + " "));
   }
}