GRAPH COLORING +========+ Time: 1 hour - 2 hours Difficulty: Hard Languages: Any +========+ Given an undirected graph represented by an adjacency matrix, implement a function that finds the smallest number of colors that can be used to color the graph such that no two adjacent vertices have the same color, using the Welsh-Powell algorithm +========+ Please answer to this message with your solution 🙂
GRAPH COLORING +========+ Time: 1 hour - 2 hours Difficulty: Hard Languages: Any +========+ Given an undirected graph represented by an adjacency matrix, implement a function that finds the smallest number of colors that can be used to color the graph such that no two adjacent vertices have the same color, using the Welsh-Powell algorithm +========+ Please answer to this message with your solution 🙂
BY Programming Challenges
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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.
