go(stats): relocate stats to common outdir

stats/stats.go

@@ -7,6 +7,8 @@
 	"encoding/json"
 	"io/ioutil"
 	"log"
+
+	"git.dotya.ml/wanderer/math-optim/util"
 )
 
 // BenchRound holds the iteration couter value and Results of size 'maxFES'.
@@ -50,9 +52,14 @@ func GetStats(algo string, dimens int, benchFuncStats []FuncStats, iterations, g
 }
 
 func SaveStats(stats []Stats, fName string) {
-	prefix := "res/stats/"
+	prefix := "out/stats/"
 	ext := ".json"
 
+	// create required folders, bail early in case of an error.
+	if err := util.CreatePath(prefix); err != nil {
+		log.Fatalln("went to create stats dir, there was an issue: ", err)
+	}
+
 	if j, err := json.MarshalIndent(stats, "", "  "); err != nil {
 		log.Fatal(err)
 	} else {