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add FuncFilter

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Looly
2022-03-27 21:15:49 +08:00
parent 328d54d986
commit 7385fe937d
14 changed files with 134 additions and 132 deletions
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42
hutool-core/src/main/java/cn/hutool/core/util/HashUtil.java
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@@ -226,7 +226,7 @@ public class HashUtil {
hash ^= ((hash << 5) + str.charAt(i) + (hash >> 2));
}
return hash & 0x7FFFFFFF;
return Math.abs(hash) & 0x7FFFFFFF;
}
/**
@@ -576,7 +576,7 @@ public class HashUtil {
* @return hash值，long[0]：低位，long[1]：高位
*/
public static long[] metroHash128(byte[] data, long seed) {
return MetroHash.hash128(data,seed).getLongArray();
return MetroHash.hash128(data, seed).getLongArray();
}
/**
@@ -588,4 +588,42 @@ public class HashUtil {
public static long[] metroHash128(byte[] data) {
return MetroHash.hash128(data).getLongArray();
}
/**
* HF Hash算法
*
* @param data 字符串
* @return hash结果
* @since 5.8.0
*/
public static long hfHash(String data) {
int length = data.length();
long hash = 0;
for (int i = 0; i < length; i++) {
hash += (long) data.charAt(i) * 3 * i;
}
if (hash < 0) {
hash = -hash;
}
return hash;
}
/**
* HFIP Hash算法
*
* @param data 字符串
* @return hash结果
* @since 5.8.0
*/
public static long hfIpHash(String data) {
int length = data.length();
long hash = 0;
for (int i = 0; i < length; i++) {
hash += data.charAt(i % 4) ^ data.charAt(i);
}
return hash;
}
}