2026-05-03 16:07:02 +00:00
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def ll_insert(head, name, phone):
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2026-05-10 15:20:20 +00:00
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"""
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проходит до конца (или сразу добавляет в конец)
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возвращает новую голову (если вставка в начало) или изменяет список по ссылке.
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"""
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2026-05-03 16:07:02 +00:00
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new_node = {'name': name, 'phone': phone, 'next': None}
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2026-05-10 15:20:20 +00:00
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# в случае пустого списка, новый узел становится головой
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if head is None:
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return new_node
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# в противном случае проходим в конец списка
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current = head
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while current['next'] is not None:
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if current['name'] == name:
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current['phone'] = phone
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return head
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current = current['next']
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# проверяем последний узел
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if current['name'] == name:
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current['phone'] = phone
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else:
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current['next'] = new_node
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return head
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def ll_find(head, name):
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"""
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ищет узел по имени.
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возвращает телефон или None
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"""
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current = head
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while current is not None:
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if current['name'] == name:
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return current['phone']
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current = current['next']
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return None
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def ll_delete(head, name):
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"""
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удаляет узел по имени.
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возвращает новую голову.
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"""
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# если список пуст
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if head is None:
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return None
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# если удаляем голову
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if head['name'] == name:
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new_head = head['next']
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head['next'] = None
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return new_head
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# ищем узел для удаления
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current = head
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while current['next'] is not None:
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if current['next']['name'] == name:
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target = current['next']
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current['next'] = target['next']
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target['next'] = None # разрываем связь у удаляемого узла (иными словами, обнуление ссылки)
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return head
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current = current['next']
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return head
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2026-05-10 18:03:20 +00:00
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def ll_collect(head, result_list):
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"""собирает все данные из связного списка в result_list"""
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current = head
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while current is not None:
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result_list.append((current['name'], current['phone']))
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current = current['next']
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2026-05-10 15:20:20 +00:00
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def ll_list_all(head):
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"""
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собирает все записи в список и сортирует
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"""
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result = []
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current = head
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while current is not None:
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result.append((current['name'], current['phone']))
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current = current['next']
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# ручная сортировка пузырьком
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n = len(result)
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for i in range(n):
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for j in range(0, n - i - 1):
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if result[j][0] > result[j + 1][0]:
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result[j], result[j + 1] = result[j + 1], result[j]
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2026-05-10 17:51:53 +00:00
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return result
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def hash_table(size):
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"""создание хеш-таблицы"""
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return [None] * size
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def hash_func(name, buckets_count):
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"""
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использует умножение на простое число для лучшего распределения
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"""
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h = 0
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multiplier = 1
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for char in name:
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h = (h + ord(char) * multiplier) % buckets_count
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multiplier = (multiplier * 31) % buckets_count
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return h
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def ht_insert(buckets, name, phone):
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"""добавить или обновить запись"""
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if buckets is None:
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return
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index = hash_func(name, len(buckets))
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buckets[index] = ll_insert(buckets[index], name, phone)
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def ht_find(buckets, name):
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"""найти телефон по имени"""
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idx = hash_func(name, len(buckets))
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return ll_find(buckets[idx], name)
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def ht_delete(buckets, name):
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"""
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удалить запись
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"""
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idx = hash_func(name, len(buckets))
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buckets[idx] = ll_delete(buckets[idx], name)
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def bubble_sort(records):
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"""пузырьковая сортировка"""
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n = len(records)
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for i in range(n - 1):
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swapped = False
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for j in range(n - 1 - i):
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if records[j][0] > records[j + 1][0]:
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records[j], records[j + 1] = records[j + 1], records[j]
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swapped = True
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if not swapped:
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break
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return records
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def ht_list_all(buckets):
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"""
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собрание всех записей и сортировка
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"""
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# Собираем все записи
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full_data = []
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for head in buckets:
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ll_collect(head, full_data)
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# Сортируем пузырьком
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bubble_sort(full_data)
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return full_data
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2026-05-10 18:03:20 +00:00
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Hash_table1 = hash_table(3)
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ht_insert(Hash_table1, 'Alena', '010')
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ht_insert(Hash_table1, 'Helena', '111')
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ht_insert(Hash_table1, 'Gena', '222')
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print(ht_list_all(Hash_table1))
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