def linked_list_add(head, name, phone):
    curr = head
    while curr is not None:
        if curr['name'] == name:
            curr['phone'] = phone
            return head
        curr = curr['next']

    new_node = {'name': name, 'phone': phone, 'next': None}
    if head is None:
        return new_node

    curr = head
    while curr['next'] is not None:
        curr = curr['next']
    curr['next'] = new_node
    return head


def linked_list_find(head, name):
    curr = head
    while curr is not None:
        if curr['name'] == name:
            return curr['phone']
        curr = curr['next']
    return None


def linked_list_remove(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 linked_list_collect_all(head):
    records = []
    curr = head
    while curr is not None:
        records.append((curr['name'], curr['phone']))
        curr = curr['next']
    records.sort(key=lambda pair: pair[0])
    return records


def _hash_bucket_index(key, table_size):
    return hash(key) % table_size


def hash_table_create(bucket_count=10):
    return [None] * bucket_count


def hash_table_put(table, name, phone):
    idx = _hash_bucket_index(name, len(table))
    table[idx] = linked_list_add(table[idx], name, phone)
    return table


def hash_table_get(table, name):
    idx = _hash_bucket_index(name, len(table))
    return linked_list_find(table[idx], name)


def hash_table_remove(table, name):
    idx = _hash_bucket_index(name, len(table))
    table[idx] = linked_list_remove(table[idx], name)
    return table


def hash_table_collect_all(table):
    all_records = []
    for head in table:
        curr = head
        while curr is not None:
            all_records.append((curr['name'], curr['phone']))
            curr = curr['next']
    all_records.sort(key=lambda pair: pair[0])
    return all_records


# Quick test
if __name__ == '__main__':
    ht = hash_table_create(5)
    ht = hash_table_put(ht, 'Alice', '111')
    ht = hash_table_put(ht, 'Bob', '222')
    ht = hash_table_put(ht, 'Alice', '333')
    print(hash_table_get(ht, 'Alice'))   # 333
    print(hash_table_get(ht, 'Charlie')) # None
    ht = hash_table_remove(ht, 'Bob')
    print(hash_table_collect_all(ht))    # [('Alice','333')]