created linked list

созданы функции добавления, удаления, изменения и ввода даынных для связонного списка

novikovsd/hashtab.py

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+import time
+import random
+import csv
+import os
+import sys
+
+
+def ll_insert(head, name, phone):
+    curr = head
+    while curr is not None:
+        if curr['name'] == name:
+            curr['phone'] = phone
+            return head
+        curr = curr['next']
+    # Вставка в начало (проще и быстрее)
+    new_node = {'name': name, 'phone': phone, 'next': head}
+    return new_node
+
+
+def ll_find(head, name):
+    curr = head
+    while curr is not None:
+        if curr['name'] == name:
+            return curr['phone']
+        curr = curr['next']
+    return None
+
+
+def ll_delete(head, name):
+    if head is None:
+        return None
+    if head['name'] == name:
+        return head['next']
+    prev = head
+    curr = head['next']
+    while curr is not None:
+        if curr['name'] == name:
+            prev['next'] = curr['next']
+            return head
+        prev = curr
+        curr = curr['next']
+    return head
+
+
+def ll_list_all(head):
+    entries = []
+    curr = head
+    while curr is not None:
+        entries.append((curr['name'], curr['phone']))
+        curr = curr['next']
+    entries.sort(key=lambda x: x[0])
+    return entries