#算法经过这一周密集的刷力扣题目，以及看别人总结讲解思路，我感觉编程能力是有长进的，有些题目我之前做过，现在掌握了套路之后再看以前的做法惨不忍睹。例如：https://leetcode.cn/problems/longest-substring-without-repeating-characters/ ，左边是以前的实现（大概35行），右边是我掌握了思路之后的实现（大概20行），明显简洁了很多。我打算以后即便不准备面试了，也把做算法题当成一个智力游戏来经常玩玩。

codedump的电报频道

#算法
经过这一周密集的刷力扣题目，以及看别人总结讲解思路，我感觉编程能力是有长进的，有些题目我之前做过，现在掌握了套路之后再看以前的做法惨不忍睹。

例如：https://leetcode.cn/problems/longest-substring-without-repeating-characters/ ，左边是以前的实现（大概35行），右边是我掌握了思路之后的实现（大概20行），明显简洁了很多。

我打算以后即便不准备面试了，也把做算法题当成一个智力游戏来经常玩玩。

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Create: 2025-02-14
Last Update: 2025-06-24 21:11:12

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Unlimited members in Telegram group now

Telegram has made it easier for its users to communicate, as it has introduced a feature that allows more than 200,000 users in a group chat. However, if the users in a group chat move past 200,000, it changes into "Broadcast Group", but the feature comes with a restriction. Groups with close to 200k members can be converted to a Broadcast Group that allows unlimited members. Only admins can post in Broadcast Groups, but everyone can read along and participate in group Voice Chats," Telegram added.

Telegram auto-delete message, expiring invites, and more

elegram is updating its messaging app with options for auto-deleting messages, expiring invite links, and new unlimited groups, the company shared in a blog post. Much like Signal, Telegram received a burst of new users in the confusion over WhatsApp’s privacy policy and now the company is adopting features that were already part of its competitors’ apps, features which offer more security and privacy. Auto-deleting messages were already possible in Telegram’s encrypted Secret Chats, but this new update for iOS and Android adds the option to make messages disappear in any kind of chat. Auto-delete can be enabled inside of chats, and set to delete either 24 hours or seven days after messages are sent. Auto-delete won’t remove every message though; if a message was sent before the feature was turned on, it’ll stick around. Telegram’s competitors have had similar features: WhatsApp introduced a feature in 2020 and Signal has had disappearing messages since at least 2016.