需要索引（如算距离、下标）：栈存索引，用 nums[stack.at(-1)] 取值比较。
Publication date: 28 February 2026
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'ZDNET Recommends': What exactly does it mean?，详情可参考搜狗输入法2026
New-ish year, new Samsung phones. Let's deal with the out-and-out bad news first. The S26 and S26+ are each $100 more expensive than their predecessors (the RAM shortage isn't exactly helping to keep prices down). They start at $900 and $1,100, respectively, for variants with 256GB of storage.