add new solutions

solutions/0/q9/solution.go

@@ -0,0 +1,18 @@
+package q9
+
+import "strconv"
+
+func isPalindrome(x int) bool {
+	if x < 0 {
+		return false
+	}
+	str := strconv.FormatInt(int64(x), 10)
+	for i := range len(str) / 2 {
+		if str[i] != str[len(str)-1-i] {
+			return false
+		}
+	}
+	return true
+}
+
+var _ = isPalindrome