BINARY TREE LEVEL ORDER TRAVERSAL +========+ Time: 30 minutes - 1 hour Difficulty: Medium Languages: Any +========+ Given the root of a binary tree, implement a function that performs a level-order traversal of the tree, and returns a list of lists, where each list contains the nodes at that level. +========+ Please answer to this message with your solution 🙂
BINARY TREE LEVEL ORDER TRAVERSAL +========+ Time: 30 minutes - 1 hour Difficulty: Medium Languages: Any +========+ Given the root of a binary tree, implement a function that performs a level-order traversal of the tree, and returns a list of lists, where each list contains the nodes at that level. +========+ Please answer to this message with your solution 🙂
BY Programming Challenges
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Telegram has no known backdoors and, even though it is come in for criticism for using proprietary encryption methods instead of open-source ones, those have yet to be compromised. While no messaging app can guarantee a 100% impermeable defense against determined attackers, Telegram is vulnerabilities are few and either theoretical or based on spoof files fooling users into actively enabling an attack.
How Does Bitcoin Mining Work?
Bitcoin mining is the process of adding new transactions to the Bitcoin blockchain. It’s a tough job. People who choose to mine Bitcoin use a process called proof of work, deploying computers in a race to solve mathematical puzzles that verify transactions.To entice miners to keep racing to solve the puzzles and support the overall system, the Bitcoin code rewards miners with new Bitcoins. “This is how new coins are created” and new transactions are added to the blockchain, says Okoro.
