hash_table_with_linked_list.py

from collections import deque

from hash_table import HashTable


class HashTableWithLinkedList(HashTable):
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)

    def _set_value(self, key, data):
        self.values[key] = deque([]) if self.values[key] is None else self.values[key]
        self.values[key].appendleft(data)
        self._keys[key] = self.values[key]

    def balanced_factor(self):
        return (
            sum([self.charge_factor - len(slot) for slot in self.values])
            / self.size_table
            * self.charge_factor
        )

    def _collision_resolution(self, key, data=None):
        if not (
            len(self.values[key]) == self.charge_factor and self.values.count(None) == 0
        ):
            return key
        return super()._collision_resolution(key, data)