import java.util.*;

public class HargaTerurut {
    public static void main(String[] args) {
        TreeMap<Integer, String> produk = new TreeMap<>();
        produk.put(15000, "Kipas Angin");
        produk.put(5000, "Sapu");
        produk.put(25000, "Rice Cooker");
        produk.put(10000, "Ember");
        produk.put(40000, "Setrika");
        System.out.println("isi terurut         : " + produk);

        System.out.println("firstKey()          : " + produk.firstKey());
        System.out.println("lastKey()           : " + produk.lastKey());
        System.out.println("firstEntry()        : " + produk.firstEntry());
        System.out.println("lastEntry()         : " + produk.lastEntry());

        System.out.println("floorKey(12000)     : " + produk.floorKey(12000));
        System.out.println("ceilingKey(12000)   : " + produk.ceilingKey(12000));
        System.out.println("lowerKey(15000)     : " + produk.lowerKey(15000));
        System.out.println("higherKey(15000)    : " + produk.higherKey(15000));
    }
}