Small adjustment

pkg/goutils/goutils.go

@@ -18,7 +18,7 @@ import (
 // return value and val is set to 0.
 func InterfaceToString(i interface{}) (val string, err error) {
 	err = nil
-	val = fmt.Sprintf("%V", i)
+	val = fmt.Sprintf("%v", i)
 	return
 }
 

pkg/goutils/minmax.go

@@ -14,6 +14,14 @@ func MaxInt(x, y int) int {
 	return x
 }
 
+func MinMaxInt(x, y int) (int,int) {
+	if x < y {
+		return x,y
+	}
+	return y,x
+}
+
+
 func MinUInt16(x, y uint16) uint16 {
 	if x < y {
 		return x

pkg/goutils/ranks.go

@@ -18,9 +18,10 @@ func IntOrder(data []int) []int {
 		return nil
 	}
 
+	r := make([]int, len(data))
 	rk := intRanker{
 		x: data,
-		r: make([]int, len(data)),
+		r: r,
 	}
 
 	for i := 0; i < len(data); i++ {
@@ -28,6 +29,26 @@ func IntOrder(data []int) []int {
 	}
 
 	sort.Sort(rk)
-
-	return rk.r
+	
+	return r
+}
+
+func ReverseIntOrder(data []int) []int {
+	if len(data) == 0 {
+		return nil
+	}
+
+	r := make([]int, len(data))
+	rk := intRanker{
+		x: data,
+		r: r,
+	}
+
+	for i := 0; i < len(data); i++ {
+		rk.r[i] = i
+	}
+
+	sort.Sort(sort.Reverse(rk))
+	
+	return r
 }