Update benchmark and helper func

pagerank.go

@@ -1,6 +1,9 @@
 package pagerank
 
-import "math"
+import (
+	"fmt"
+	"math"
+)
 
 type Interface interface {
 	Rank(followingProb, tolerance float64, resultFunc func(label int, rank float64))
@@ -21,6 +24,22 @@ func New() *pageRank {
 	return pr
 }
 
+func (pr *pageRank) String() string {
+	return fmt.Sprintf(
+		"PageRank Struct:\n"+
+			"InLinks: %v\n"+
+			"NumberOutLinks: %v\n"+
+			"CurrentAvailableIndex: %d\n"+
+			"KeyToIndex: %v\n"+
+			"IndexToKey: %v",
+		pr.inLinks,
+		pr.numberOutLinks,
+		pr.currentAvailableIndex,
+		pr.keyToIndex,
+		pr.indexToKey,
+	)
+}
+
 func (pr *pageRank) keyAsArrayIndex(key int) int {
 	index, ok := pr.keyToIndex[key]
 

pagerank_test.go

@@ -207,21 +207,19 @@ func TestShouldCorrectlyReproduceTheWikipediaExample(t *testing.T) {
 	assertRank(t, pageRank, expectedRank)
 }
 
-func BenchmarkOneMillion(b *testing.B) {
-	n := 1000000
+func BenchmarkOneHundredThousand(b *testing.B) {
+	n := 100_000
 
 	pageRank := New()
 
-	rand.Seed(5)
-
 	b.ResetTimer()
 	for i := 0; i < b.N; i++ {
 		for from := 0; from < n; from++ {
 			for j := 0; j < rand.Intn(400); j++ {
 				too := rand.Intn(n)
 
 				to := too
-				if too > 800000 {
+				if too > 80000 {
 					to = rand.Intn(3)
 				}