adding mysort function with a benchmark test

benchdb/benchdb_test.go

@@ -0,0 +1,29 @@
+package benchdb
+
+import (
+	"math/rand"
+	"sort"
+	"testing"
+)
+
+func mySort(data sort.Interface, a, b int) {
+	// Insertion sort borrowed from the std library.
+	for i := a + 1; i < b; i++ {
+		for j := i; j > a && data.Less(j, j-1); j-- {
+			data.Swap(j, j-1)
+		}
+	}
+}
+
+func BenchmarkMySort1K(b *testing.B) {
+	b.StopTimer()
+	for i := 0; i < b.N; i++ {
+		data := make([]int, 1000)
+		for i := 0; i < len(data); i++ {
+			data[i] = rand.Int()
+		}
+		b.StartTimer()
+		mySort(sort.IntSlice(data), 0, len(data))
+		b.StopTimer()
+	}
+}