if (arr[j] arr[j + 1]) { // 升序：前面的大于后面的就交换
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5) What’s the connection between NFTs and cryptocurrency?Non-fungible tokens (NFTs) aren't cryptocurrencies, but they do use blockchain technology. Many NFTs are based on Ethereum, where the blockchain serves as a ledger for all the transactions related to said NFT and the properties it represents.5) How to make an NFT?
Just… don’t do it with JavaScript ffs.
"I actually started on the [free] GarageBand app on the iPad - and although you might be insecure about your first three or four beats, I genuinely think that if you have a phone, you have a potential career in music."