再写代码：从插入/冒泡开始，逐步挑战快排/归并
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Do a second pass to clean up the code/comments and make further optimizations
OpenAI has raised $110 billion in private funding, the company announced Friday morning, commencing one of the largest private funding rounds in history. The new funding consists of a $50 billion investment from Amazon as well as $30 billion each from Nvidia and SoftBank, against a $730 billion pre-money valuation.
5 Apple products that could be unveiled on March 4