Fix mistakes and rename

tests/go/func/correct/advancedsortwordarr.go

@@ -6,5 +6,4 @@ func AdvancedSortWordArr(a []string, f func(a, b string) int) {
 	sort.Slice(a, func(i, j int) bool {
 		return f(a[i], a[j]) < 0
 	})
-	return a
 }

tests/go/func/correct/findnextprime.go

@@ -1,24 +1,8 @@
 package correct
 
-import "math"
-
-func isPrime(value int) bool {
-	if value < 2 {
-		return false
-	}
-	limit := int(math.Floor(math.Sqrt(float64(value))))
-	i := 2
-	for i <= limit {
-		if value%i == 0 {
-			return false
-		}
-		i++
-	}
-	return true
-}
-func FindNextPrime(value int) int {
-	if isPrime(value) {
-		return value
+func FindNextPrime(nb int) int {
+	if isPrime(nb) {
+		return nb
 	}
-	return FindNextPrime(value + 1)
+	return FindNextPrime(nb + 1)
 }

tests/go/func/correct/findprevprime.go

@@ -13,12 +13,12 @@ func isPrime(nb int) bool {
 	return true
 }
 
-func FindPrevPrime(nbr int) int {
-	if nbr < 2 {
+func FindPrevPrime(nb int) int {
+	if nb < 2 {
 		return 0
 	}
-	if isPrime(nbr) {
-		return nbr
+	if isPrime(nb) {
+		return nb
 	}
-	return FindPrevPrime(nbr - 1)
+	return FindPrevPrime(nb - 1)
 }

tests/go/func/correct/printmemory.go

@@ -63,7 +63,7 @@ func printLine(arr [10]int, start int) {
 	z01.PrintRune('\n')
 	c := start
 	for c < start+16 && c < size {
-		if unicode.IsPrint() {
+		if unicode.IsPrint(rune(arr[c])) {
 			z01.PrintRune(rune(arr[c]))
 		} else {
 			z01.PrintRune('.')

tests/go/func/correct/printnbrbase.go

@@ -3,7 +3,7 @@ package correct
 import "github.com/01-edu/z01"
 
 func PrintNbrBase(n int, base string) {
-	if ValidBase(base) {
+	if validBase(base) {
 		length := len(base)
 		sign := 1
 		rbase := []rune(base)