Add reverse list

Former-commit-id: f45b4f86ca

utils.go

@@ -247,3 +247,16 @@ func decodeFromBase32(s string) (s2 string, err error) {
 	s2 = string(bString)
 	return
 }
+
+func reverseSliceInt64(s []int64) []int64 {
+	for i, j := 0, len(s)-1; i < j; i, j = i+1, j-1 {
+		s[i], s[j] = s[j], s[i]
+	}
+	return s
+}
+func reverseSliceString(s []string) []string {
+	for i, j := 0, len(s)-1; i < j; i, j = i+1, j-1 {
+		s[i], s[j] = s[j], s[i]
+	}
+	return s
+}

utils_test.go

@@ -4,6 +4,16 @@ import (
 	"testing"
 )
 
+func TestReverseList(t *testing.T) {
+	s := []int64{1, 10, 2, 20}
+	if reverseSliceInt64(s)[0] != 20 {
+		t.Errorf("Could not reverse: %v", s)
+	}
+	s2 := []string{"a", "b", "d", "c"}
+	if reverseSliceString(s2)[0] != "c" {
+		t.Errorf("Could not reverse: %v", s2)
+	}
+}
 func TestHashing(t *testing.T) {
 	p := HashPassword("1234")
 	log.Debug(p)