[1] добавлены структуры

shalovsa/lab1/docs/data/phone_book.py

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+def ll_make_node(name, phone):
+    return {'name': name, 'phone': phone, 'next': None}
+
+
+def ll_insert(head, name, phone):
+    if head is None:
+        return ll_make_node(name, phone)
+
+    current = head
+    while current is not None:
+        if current['name'] == name:
+            current['phone'] = phone
+            return head
+        current = current['next']
+
+    new_node = ll_make_node(name, phone)
+    new_node['next'] = head
+    return new_node
+
+
+def ll_find(head, name):
+    current = head
+    while current is not None:
+        if current['name'] == name:
+            return current['phone']
+        current = current['next']
+    return None
+
+
+def ll_delete(head, name):
+    if head is None:
+        return None
+
+    if head['name'] == name:
+        return head['next']
+
+    current = head
+    while current['next'] is not None:
+        if current['next']['name'] == name:
+            current['next'] = current['next']['next']
+            return head
+        current = current['next']
+
+    return head
+
+
+def ll_list_all(head):
+    result = []
+    current = head
+    while current is not None:
+        result.append((current['name'], current['phone']))
+        current = current['next']
+    return sorted(result, key=lambda x: x[0])
+
+def ht_make(size=256):
+    return [None] * size
+
+
+def ht_hash(buckets, name):
+    return hash(name) % len(buckets)
+
+
+def ht_insert(buckets, name, phone):
+    idx = ht_hash(buckets, name)
+    buckets[idx] = ll_insert(buckets[idx], name, phone)
+
+
+def ht_find(buckets, name):
+    idx = ht_hash(buckets, name)
+    return ll_find(buckets[idx], name)
+
+
+def ht_delete(buckets, name):
+    idx = ht_hash(buckets, name)
+    buckets[idx] = ll_delete(buckets[idx], name)
+
+
+def ht_list_all(buckets):
+    result = []
+    for bucket_head in buckets:
+        current = bucket_head
+        while current is not None:
+            result.append((current['name'], current['phone']))
+            current = current['next']
+    return sorted(result, key=lambda x: x[0])
+
+def bst_make_node(name, phone):
+    return {'name': name, 'phone': phone, 'left': None, 'right': None}
+
+
+def bst_insert(root, name, phone):
+    new_node = bst_make_node(name, phone)
+
+    if root is None:
+        return new_node
+
+    current = root
+    while True:
+        if name == current['name']:
+            current['phone'] = phone
+            return root
+        elif name < current['name']:
+            if current['left'] is None:
+                current['left'] = new_node
+                return root
+            current = current['left']
+        else:
+            if current['right'] is None:
+                current['right'] = new_node
+                return root
+            current = current['right']
+
+
+def bst_find(root, name):
+    current = root
+    while current is not None:
+        if name == current['name']:
+            return current['phone']
+        elif name < current['name']:
+            current = current['left']
+        else:
+            current = current['right']
+    return None
+
+
+def _bst_min_node(node):
+    current = node
+    while current['left'] is not None:
+        current = current['left']
+    return current
+
+
+def bst_delete(root, name):
+    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']
+        else:
+            successor = _bst_min_node(root['right'])
+            root['name'] = successor['name']
+            root['phone'] = successor['phone']
+            root['right'] = bst_delete(root['right'], successor['name'])
+
+    return root
+
+
+def bst_list_all(root):
+    result = []
+    stack = []
+    current = root
+
+    while current is not None or stack:
+        while current is not None:
+            stack.append(current)
+            current = current['left']
+        current = stack.pop()
+        result.append((current['name'], current['phone']))
+        current = current['right']
+
+    return result