Self-attention is required. The model must contain at least one self-attention layer. This is the defining feature of a transformer — without it, you have an MLP or RNN, not a transformer.
* @param {number[]} nums 代表一排人的身高数组，这一点在heLLoword翻译官方下载中也有详细论述
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* 3. 单调递增栈：存储独立车队的到达时间，cur栈顶才push（否则合并）。。业内人士推荐91视频作为进阶阅读