fix encoding to zero

CHANGELOG.md

@@ -0,0 +1,5 @@
+# v1.0.1
+
+2024-08-08 
+
+* fix encoding to zero

abcex.go

@@ -1,14 +1,17 @@
 package abcex
 
-import "fmt"
+import (
-import "math"
+	"fmt"
+	"math"
+)
 
 var decToAbcex = map[int]string{
 	0: "0", 1: "1", 2: "2", 3: "3", 4: "4", 5: "5", 6: "6", 7: "7",
 	8: "8", 9: "9", 10: "a", 11: "b", 12: "c", 13: "d", 14: "e",
 	15: "f", 16: "g", 17: "h", 18: "i", 19: "j", 20: "k", 21: "l",
 	22: "m", 23: "n", 24: "o", 25: "p", 26: "q", 27: "r", 28: "s",
-	29: "t", 30: "u", 31: "v", 32: "w", 33: "x", 34: "y", 35: "z" }
+	29: "t", 30: "u", 31: "v", 32: "w", 33: "x", 34: "y", 35: "z",
+}
 
 var abcexToDec = flipMap()
 
@@ -30,6 +33,10 @@ func flipMap() map[string]int {
 }
 
 func Encode(number int64) string {
+	if number == 0 {
+		return "0"
+	}
+
 	result := ""
 
 	for number > 0 {

abcex_test.go

@@ -1,7 +1,9 @@
 package abcex
 
-import "fmt"
+import (
-import "testing"
+	"fmt"
+	"testing"
+)
 
 func TestEncode(t *testing.T) {
 	fmt.Println(Encode(12345))
@@ -12,3 +14,11 @@ func TestDecode(t *testing.T) {
 	fmt.Println(Decode("9ix"))
 	// Output: 12345
 }
+
+func TestZero(t *testing.T) {
+	fmt.Println(Encode(0))
+	// Output: 0
+
+	fmt.Println(Decode("0"))
+	// Output: 0
+}