update

oj/hulu-2019-interview/main.go

@@ -56,18 +56,24 @@ func mul(a, b []byte) []byte {
 			c[i+j] += res
 		}
 	}
-	mod, i := 0, 0
-	for ; i < len(c); i++ {
+	mod := 0
+	for i := 0; i < len(c); i++ {
 		c[i] += byte(mod)
 		mod = int(c[i]-'0') / 10
 		c[i] = byte(int(c[i]-'0')%10 + '0')
-		if c[i] == '0' && mod == 0 {
+	}
+	i := m + n
+	for ; 1 <= i; i-- {
+		if c[i-1] != '0' {
 			break
 		}
 	}
+	if i == 0 {
+		return c[:i+1]
+	}
 	return c[:i]
 }
 
 func main() {
-	fmt.Println(pow(6))
+	fmt.Println(pow(9999))
 }