Create & Init Project...

app/service/openplatform/abtest/model/jump/jump.go

@@ -0,0 +1,30 @@
+package jump
+
+import (
+	"bytes"
+	"crypto/md5"
+	"encoding/binary"
+)
+
+//Hash get result by hash
+func Hash(key uint64, numBuckets int) int32 {
+	var b int64 = -1
+	var j int64
+
+	for j < int64(numBuckets) {
+		b = j
+		key = key*2862933555777941757 + 1
+		j = int64(float64(b+1) * (float64(int64(1)<<31) / float64((key>>33)+1)))
+	}
+
+	return int32(b)
+}
+
+//Md5 get result by Md5
+func Md5(key string) uint64 {
+	var x uint64
+	s := md5.Sum([]byte(key))
+	b := bytes.NewBuffer(s[:])
+	binary.Read(b, binary.BigEndian, &x)
+	return x
+}