位图法这里漏乘了整型的长度

doocs / advanced-java

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Closed sincof closed 2 years ago

sincof commented 2 years ago

java int的长度是32bit = 4 Byte，应该还要乘上4，2.5 亿个整数占的最少内存大小为：2.5e8/1024/1024/1024 * 4=3.72G