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java.lang.Objectorg.apache.mahout.math.MurmurHash
public final class MurmurHash
This is a very fast, non-cryptographic hash suitable for general hash-based lookup. See http://murmurhash.googlepages.com/ for more details.
The C version of MurmurHash 2.0 found at that site was ported to Java by Andrzej Bialecki (ab at getopt org).
Method Summary | |
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static int |
hash(byte[] data,
int seed)
Hashes bytes in an array. |
static int |
hash(byte[] data,
int offset,
int length,
int seed)
Hashes bytes in part of an array. |
static int |
hash(ByteBuffer buf,
int seed)
Hashes the bytes in a buffer from the current position to the limit. |
static long |
hash64A(byte[] data,
int seed)
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static long |
hash64A(byte[] data,
int offset,
int length,
int seed)
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static long |
hash64A(ByteBuffer buf,
int seed)
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Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Method Detail |
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public static int hash(byte[] data, int seed)
data
- The bytes to hash.seed
- The seed for the hash.
public static int hash(byte[] data, int offset, int length, int seed)
data
- The data to hash.offset
- Where to start munging.length
- How many bytes to process.seed
- The seed to start with.
public static int hash(ByteBuffer buf, int seed)
buf
- The bytes to hash.seed
- The seed for the hash.
public static long hash64A(byte[] data, int seed)
public static long hash64A(byte[] data, int offset, int length, int seed)
public static long hash64A(ByteBuffer buf, int seed)
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