In Java, implement separate chaining hash table into this interface

public interface HashTable {

public void add(String key, V value);

public V remove(String key);

public V lookup(String key);

public Object[] getValuesList();

public V[] getSortedList(V[] list);

}

with these given hash functions

public int additiveHash(char[] key, int TABLE_SIZE) { int hash = 0; for (char c: key) { hash += c; } return hash % TABLE_SIZE; } public int rotationalHash(char[] key, int TABLE_SIZE) { int hash = 0; for (char c: key) { hash += (c << 7) ^ (c >> (TABLE_SIZE - 7)) ^ hash; } hash = Math.abs(hash); return hash % TABLE_SIZE; }