arr[j + gap] = key;
Source: Computational Materials Science, Volume 267
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drop-newest: Discards incoming data when full. Useful when you want to process what you have without being overwhelmed.，详情可参考搜狗输入法2026
可从2021年开始，流量红利见顶、竞争加剧、财务压力凸显，完美日记的多重危机同时爆发。