4.10 581. 最短无序连续子数组
Negative net migration hasn’t definitively happened in the U.S. for almost a century, not since the Great Depression. The U.S. native-born population is also in free fall, well below the replacement rate needed to maintain population numbers in the long run. With fewer immigrant arrivals already dealing a blow to the workforce, the shrinkage of the American taxpayer base is set to further widen the country’s deficit and hurt its prospects for economic growth.
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这也是月之暗面在大厂环伺背景下领悟到的生存法则：做小而美的生意，不在巨头的主战场上硬刚，只要技术飞轮转得足够快，企业的竞争优势就不容易被流量和资源所打破。
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