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The tee() memory cliff: Stream.share() requires explicit buffer configuration. You choose the highWaterMark and backpressure policy upfront — no more silent unbounded growth when consumers run at different speeds.
，详情可参考heLLoword翻译官方下载
// 记录答案：栈顶就是「当前元素右侧第一个更大值」（易错点3：别写反判断）
If you're an early adopter looking to try out AR glasses, it's hard to argue with the $299 price tag. For reference, Xreal recently launched a more affordable version of its glasses called the Xreal 1S, priced at $449.