Web crawler related, and find the approximate calculation of SimHash SimHash, JAVA write

SimHash\com\lietu\simhash\BitUtil.java
.......\...\.....\.......\CombinationGenerator.java
.......\...\.....\.......\GeneralHashFunctionLibrary.java
.......\...\.....\.......\Hash.java
.......\...\.....\.......\JenkinsHash.java
.......\...\.....\.......\MD5.java
.......\...\.....\.......\MurmurHash.java
.......\...\.....\.......\package.html
.......\...\.....\.......\POISimHash.java
.......\...\.....\.......\SimHashData.java
.......\...\.....\.......\SimHashSet.java
.......\...\.....\.......\SimHashSet4.java
.......\...\.....\.......\Span.java
.......\...\.....\.......\SynonymsMap.java
.......\...\.....\.......\TextSimHash.java
.......\...\.....\simhash
.......\...\lietu
.......\com
SimHash

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