From 77bc58e44bbf17bfafe505d08ddf089baa930366 Mon Sep 17 00:00:00 2001
From: ivantsovma <mia2006_6@mail.ru>
Date: Sun, 1 Mar 2026 21:53:07 +0300
Subject: [PATCH] feat(linked-list): add basic node structure and insert
 function

---
 docs/data/bst_phonebook.py         | 136 +++++++++++++++++++++++++++++
 docs/data/bst_results.csv          |   3 +
 docs/data/compare_structures.py    |  46 ++++++++++
 docs/data/hash_table_phonebook.py  | 133 ++++++++++++++++++++++++++++
 docs/data/linked_list_phonebook.py | 122 ++++++++++++++++++++++++++
 5 files changed, 440 insertions(+)
 create mode 100644 docs/data/bst_phonebook.py
 create mode 100644 docs/data/bst_results.csv
 create mode 100644 docs/data/compare_structures.py
 create mode 100644 docs/data/hash_table_phonebook.py
 create mode 100644 docs/data/linked_list_phonebook.py

diff --git a/docs/data/bst_phonebook.py b/docs/data/bst_phonebook.py
new file mode 100644
index 0000000..2dec23a
--- /dev/null
+++ b/docs/data/bst_phonebook.py
@@ -0,0 +1,136 @@
+import time
+import csv
+import random
+import os
+
+def create_node(name, phone):
+    """Создает узел BST"""
+    return {'name': name, 'phone': phone, 'left': None, 'right': None}
+
+def bst_insert(root, name, phone):
+    """Вставляет запись в BST"""
+    if root is None:
+        return create_node(name, phone)
+    
+    current = root
+    while True:
+        if name < current['name']:
+            if current['left'] is None:
+                current['left'] = create_node(name, phone)
+                break
+            current = current['left']
+        elif name > current['name']:
+            if current['right'] is None:
+                current['right'] = create_node(name, phone)
+                break
+            current = current['right']
+        else:
+            current['phone'] = phone
+            break
+    
+    return root
+
+def bst_find(root, name):
+    """Ищет запись в BST"""
+    current = root
+    while current:
+        if name == current['name']:
+            return current['phone']
+        elif name < current['name']:
+            current = current['left']
+        else:
+            current = current['right']
+    return None
+
+def bst_find_min(root):
+    """Находит минимальный узел"""
+    if root is None:
+        return None
+    current = root
+    while current['left']:
+        current = current['left']
+    return current
+
+def bst_delete(root, name):
+    """Удаляет запись из BST"""
+    if root is None:
+        return None
+    
+    if name < root['name']:
+        root['left'] = bst_delete(root['left'], name)
+    elif name > root['name']:
+        root['right'] = bst_delete(root['right'], name)
+    else:
+        if root['left'] is None:
+            return root['right']
+        elif root['right'] is None:
+            return root['left']
+        
+        min_node = bst_find_min(root['right'])
+        root['name'] = min_node['name']
+        root['phone'] = min_node['phone']
+        root['right'] = bst_delete(root['right'], min_node['name'])
+    
+    return root
+
+def generate_test_data(n=300):
+    """Генерирует тестовые данные"""
+    records = [(f"User_{i:05d}", f"123-456-{i%10000:04d}") for i in range(n)]
+    records_shuffled = records.copy()
+    random.shuffle(records_shuffled)
+    records_sorted = sorted(records, key=lambda x: x[0])
+    return records_shuffled, records_sorted
+
+def run_experiment():
+    print("BST ТЕЛЕФОННЫЙ СПРАВОЧНИК")
+    
+    os.makedirs('docs/data', exist_ok=True)
+    
+    n = 300
+    print(f"\nГенерация {n} тестовых записей...")
+    records_shuffled, records_sorted = generate_test_data(n)
+    
+    results = []
+    
+    # Тест 1: Случайный порядок
+    print("\n--- Тест 1: Случайный порядок ---")
+    root = None
+    start = time.perf_counter()
+    for name, phone in records_shuffled:
+        root = bst_insert(root, name, phone)
+    insert_time1 = time.perf_counter() - start
+    print(f"Вставка: {insert_time1:.4f} сек")
+    
+    names_to_find = [records_shuffled[i][0] for i in range(30)]
+    start = time.perf_counter()
+    for name in names_to_find:
+        bst_find(root, name)
+    find_time1 = time.perf_counter() - start
+    print(f"Поиск 30 записей: {find_time1:.4f} сек")
+    
+    # Тест 2: Отсортированный порядок
+    print("\n--- Тест 2: Отсортированный порядок ---")
+    root = None
+    start = time.perf_counter()
+    for name, phone in records_sorted:
+        root = bst_insert(root, name, phone)
+    insert_time2 = time.perf_counter() - start
+    print(f"Вставка: {insert_time2:.4f} сек")
+    
+    # Сохраняем результаты
+    results.append(['BST', 'случайный', insert_time1, find_time1, 0])
+    results.append(['BST', 'отсортированный', insert_time2, 0, 0])
+    
+    with open('docs/data/bst_results.csv', 'w', newline='', encoding='utf-8') as f:
+        writer = csv.writer(f)
+        writer.writerow(['Структура', 'Режим', 'Время_вставки', 'Время_поиска', 'Время_удаления'])
+        writer.writerows(results)
+    
+    print(f"\nРезультаты сохранены в docs/data/bst_results.csv")
+    print(f"\nСравнение:")
+    print(f"Случайный порядок вставки: {insert_time1:.4f} сек")
+    print(f"Отсортированный порядок вставки: {insert_time2:.4f} сек")
+    print(f"Разница: {insert_time2/insert_time1:.1f} раз")
+
+if __name__ == "__main__":
+    run_experiment()
\ No newline at end of file
diff --git a/docs/data/bst_results.csv b/docs/data/bst_results.csv
new file mode 100644
index 0000000..8abbfd3
--- /dev/null
+++ b/docs/data/bst_results.csv
@@ -0,0 +1,3 @@
+Структура,Режим,Время_вставки,Время_поиска,Время_удаления
+BST,случайный,0.0002327000256627798,1.3399985618889332e-05,0
+BST,отсортированный,0.0036721999058499932,0,0
diff --git a/docs/data/compare_structures.py b/docs/data/compare_structures.py
new file mode 100644
index 0000000..04cafe0
--- /dev/null
+++ b/docs/data/compare_structures.py
@@ -0,0 +1,46 @@
+import csv
+import os
+
+def read_results(filename):
+    """Читает результаты из CSV файла"""
+    results = []
+    try:
+        with open(filename, 'r', encoding='utf-8') as f:
+            reader = csv.reader(f)
+            next(reader)  # Пропускаем заголовок
+            for row in reader:
+                results.append(row)
+    except:
+        print(f"Не удалось прочитать {filename}")
+    return results
+
+def main():
+    print("СРАВНЕНИЕ СТРУКТУР ДАННЫХ")
+    
+    # Читаем результаты
+    linked_list = read_results('docs/data/linked_list_results.csv')
+    hash_table = read_results('docs/data/hash_table_results.csv')
+    bst = read_results('docs/data/bst_results.csv')
+    
+    print("\nРЕЗУЛЬТАТЫ")
+    print("\nСвязный список:")
+    for row in linked_list:
+        print(f"  {row[1]}: вставка={row[2]} сек, поиск={row[3]} сек")
+    
+    print("\nХеш-таблица:")
+    for row in hash_table:
+        print(f"  {row[1]}: вставка={row[2]} сек, поиск={row[3]} сек")
+    
+    print("\nBST:")
+    for row in bst:
+        print(f"  {row[1]}: вставка={row[2]} сек, поиск={row[3]} сек")
+    
+    print("ВЫВОДЫ:")
+    print("1. Хеш-таблица работает быстрее всего для поиска")
+    print("2. BST сильно замедляется на отсортированных данных")
+    print("3. Связный список самый медленный для всех операций")
+    print("4. Для частого поиска лучше использовать хеш-таблицу")
+    print("5. Для отсортированных данных BST неэффективен")
+
+if __name__ == "__main__":
+    main()
\ No newline at end of file
diff --git a/docs/data/hash_table_phonebook.py b/docs/data/hash_table_phonebook.py
new file mode 100644
index 0000000..c1bca3b
--- /dev/null
+++ b/docs/data/hash_table_phonebook.py
@@ -0,0 +1,133 @@
+import time
+import csv
+import random
+import os
+
+def create_node(name, phone):
+    """Создает узел для бакета"""
+    return {'name': name, 'phone': phone, 'next': None}
+
+def ll_insert(head, name, phone):
+    """Вставка в связный список"""
+    new_node = create_node(name, phone)
+    
+    if head is None:
+        return new_node
+    
+    if head['name'] == name:
+        head['phone'] = phone
+        return head
+    
+    current = head
+    while current['next']:
+        if current['next']['name'] == name:
+            current['next']['phone'] = phone
+            return head
+        current = current['next']
+    
+    current['next'] = new_node
+    return head
+
+def ll_find(head, name):
+    """Поиск в связном списке"""
+    current = head
+    while current:
+        if current['name'] == name:
+            return current['phone']
+        current = current['next']
+    return None
+
+def ll_delete(head, name):
+    """Удаление из связного списка"""
+    if head is None:
+        return None
+    
+    if head['name'] == name:
+        return head['next']
+    
+    current = head
+    while current['next']:
+        if current['next']['name'] == name:
+            current['next'] = current['next']['next']
+            return head
+        current = current['next']
+    
+    return head
+
+def hash_function(name, table_size):
+    """Простая хеш-функция"""
+    return sum(ord(c) for c in name) % table_size
+
+def ht_insert(table, name, phone):
+    """Вставка в хеш-таблицу"""
+    index = hash_function(name, len(table))
+    table[index] = ll_insert(table[index], name, phone)
+
+def ht_find(table, name):
+    """Поиск в хеш-таблице"""
+    index = hash_function(name, len(table))
+    return ll_find(table[index], name)
+
+def ht_delete(table, name):
+    """Удаление из хеш-таблицы"""
+    index = hash_function(name, len(table))
+    table[index] = ll_delete(table[index], name)
+
+def generate_test_data(n=500):
+    """Генерирует тестовые данные"""
+    records = [(f"User_{i:05d}", f"123-456-{i%10000:04d}") for i in range(n)]
+    random.shuffle(records)
+    return records
+
+def run_experiment():
+    print("ХЕШ-ТАБЛИЦА ТЕЛЕФОННЫЙ СПРАВОЧНИК")
+    
+    os.makedirs('docs/data', exist_ok=True)
+    
+    # Создаем хеш-таблицу
+    table_size = 100
+    table = [None] * table_size
+    
+    # Тестовые данные
+    n = 300
+    print(f"\nГенерация {n} тестовых записей...")
+    records = generate_test_data(n)
+    
+    results = []
+    
+    # Вставка
+    print("\n--- Тестирование ---")
+    start = time.perf_counter()
+    for name, phone in records:
+        ht_insert(table, name, phone)
+    insert_time = time.perf_counter() - start
+    print(f"Вставка: {insert_time:.4f} сек")
+    
+    # Поиск
+    names_to_find = [records[i][0] for i in range(50)]
+    start = time.perf_counter()
+    for name in names_to_find:
+        ht_find(table, name)
+    find_time = time.perf_counter() - start
+    print(f"Поиск 50 записей: {find_time:.4f} сек")
+    
+    # Удаление
+    names_to_delete = names_to_find[:25]
+    start = time.perf_counter()
+    for name in names_to_delete:
+        ht_delete(table, name)
+    delete_time = time.perf_counter() - start
+    print(f"Удаление 25 записей: {delete_time:.4f} сек")
+    
+    results.append(['HashTable', 'случайный', insert_time, find_time, delete_time])
+    
+    # Сохраняем результаты
+    with open('docs/data/hash_table_results.csv', 'w', newline='', encoding='utf-8') as f:
+        writer = csv.writer(f)
+        writer.writerow(['Структура', 'Режим', 'Время_вставки', 'Время_поиска', 'Время_удаления'])
+        writer.writerows(results)
+    
+    print(f"\nРезультаты сохранены в docs/data/hash_table_results.csv")
+
+if __name__ == "__main__":
+    run_experiment()
\ No newline at end of file
diff --git a/docs/data/linked_list_phonebook.py b/docs/data/linked_list_phonebook.py
new file mode 100644
index 0000000..02cf7fd
--- /dev/null
+++ b/docs/data/linked_list_phonebook.py
@@ -0,0 +1,122 @@
+import time
+import csv
+import random
+import os
+
+def create_node(name, phone):
+    """Создает новый узел списка"""
+    return {'name': name, 'phone': phone, 'next': None}
+
+def ll_insert(head, name, phone):
+    """Вставляет или обновляет запись"""
+    new_node = create_node(name, phone)
+    
+    if head is None:
+        return new_node
+    
+    current = head
+    prev = None
+    
+    while current:
+        if current['name'] == name:
+            current['phone'] = phone
+            return head
+        prev = current
+        current = current['next']
+    
+    prev['next'] = new_node
+    return head
+
+def ll_find(head, name):
+    """Ищет запись по имени"""
+    current = head
+    while current:
+        if current['name'] == name:
+            return current['phone']
+        current = current['next']
+    return None
+
+def ll_delete(head, name):
+    """Удаляет запись"""
+    if head is None:
+        return None
+    
+    if head['name'] == name:
+        return head['next']
+    
+    current = head
+    while current['next']:
+        if current['next']['name'] == name:
+            current['next'] = current['next']['next']
+            return head
+        current = current['next']
+    
+    return head
+
+def ll_list_all(head):
+    """Собирает все записи"""
+    records = []
+    current = head
+    while current:
+        records.append((current['name'], current['phone']))
+        current = current['next']
+    return sorted(records, key=lambda x: x[0])
+
+def generate_test_data(n=500):
+    """Генерирует тестовые данные"""
+    records = [(f"User_{i:05d}", f"123-456-{i%10000:04d}") for i in range(n)]
+    records_shuffled = records.copy()
+    random.shuffle(records_shuffled)
+    records_sorted = sorted(records, key=lambda x: x[0])
+    return records_shuffled, records_sorted
+
+def run_experiment():
+    print("LINKED LIST ТЕЛЕФОННЫЙ СПРАВОЧНИК")
+    
+    # Создаем папку для результатов
+    os.makedirs('docs/data', exist_ok=True)
+    
+    # Тестовые данные
+    n = 300  # Начинаем с 300 записей
+    print(f"\nГенерация {n} тестовых записей...")
+    records_shuffled, records_sorted = generate_test_data(n)
+    
+    results = []
+    
+    # Тестируем на случайных данных
+    print("\n--- Тестирование на случайных данных ---")
+    head = None
+    start = time.perf_counter()
+    for name, phone in records_shuffled:
+        head = ll_insert(head, name, phone)
+    insert_time = time.perf_counter() - start
+    print(f"Вставка: {insert_time:.4f} сек")
+    
+    # Поиск
+    names_to_find = [records_shuffled[i][0] for i in range(50)]
+    start = time.perf_counter()
+    for name in names_to_find:
+        ll_find(head, name)
+    find_time = time.perf_counter() - start
+    print(f"Поиск 50 записей: {find_time:.4f} сек")
+    
+    # Удаление
+    names_to_delete = names_to_find[:25]
+    start = time.perf_counter()
+    for name in names_to_delete:
+        head = ll_delete(head, name)
+    delete_time = time.perf_counter() - start
+    print(f"Удаление 25 записей: {delete_time:.4f} сек")
+    
+    results.append(['LinkedList', 'случайный', insert_time, find_time, delete_time])
+    
+    # Сохраняем результаты
+    with open('docs/data/linked_list_results.csv', 'w', newline='', encoding='utf-8') as f:
+        writer = csv.writer(f)
+        writer.writerow(['Структура', 'Режим', 'Время_вставки', 'Время_поиска', 'Время_удаления'])
+        writer.writerows(results)
+    
+    print(f"\nРезультаты сохранены в docs/data/linked_list_results.csv")
+
+if __name__ == "__main__":
+    run_experiment()
\ No newline at end of file