ArrayList — это динамический массив, а LinkedList — двусвязный список.
🔹 Структура данных
— ArrayList хранит элементы в
— LinkedList хранит
🔹 Операции вставки и удаления
— В ArrayList вставка/удаление в середине
— В LinkedList вставка/удаление
🔹 Использование памяти
— ArrayList хранит
— LinkedList требует
BY Библиотека собеса по Java | вопросы с собеседований
Telegram is a free app and runs on donations. According to a blog on the telegram: We believe in fast and secure messaging that is also 100% free. Pavel Durov, who shares our vision, supplied Telegram with a generous donation, so we have quite enough money for the time being. If Telegram runs out, we will introduce non-essential paid options to support the infrastructure and finance developer salaries. But making profits will never be an end-goal for Telegram.
Some messages aren’t supposed to last forever. There are some Telegram groups and conversations where it’s best if messages are automatically deleted in a day or a week. Here’s how to auto-delete messages in any Telegram chat. You can enable the auto-delete feature on a per-chat basis. It works for both one-on-one conversations and group chats. Previously, you needed to use the Secret Chat feature to automatically delete messages after a set time. At the time of writing, you can choose to automatically delete messages after a day or a week. Telegram starts the timer once they are sent, not after they are read. This won’t affect the messages that were sent before enabling the feature.
Библиотека собеса по Java | вопросы с собеседований from nl