First version of obicleandb...

Former-commit-id: e60b61d015abbf029a555b51de99b4252c50ab59

pkg/obistats/stats.go

@@ -0,0 +1,38 @@
+package obistats
+
+import (
+	"slices"
+
+	"golang.org/x/exp/constraints"
+)
+
+type Number interface {
+	constraints.Float | constraints.Integer
+}
+
+func Median[T Number](data []T) float64 {
+	dataCopy := make([]T, len(data))
+	copy(dataCopy, data)
+
+	slices.Sort(dataCopy)
+
+	var median float64
+	l := len(dataCopy)
+	if l == 0 {
+		return 0
+	} else if l%2 == 0 {
+		median = float64((dataCopy[l/2-1] + dataCopy[l/2]) / 2.0)
+	} else {
+		median = float64(dataCopy[l/2])
+	}
+
+	return median
+}
+
+func Mean[T Number](data []T) float64 {
+	var sum float64
+	for _, v := range data {
+		sum += float64(v)
+	}
+	return sum / float64(len(data))
+}