9. Palindrome Number

9. Palindrome Number/Solution.cs

@@ -0,0 +1,25 @@
+namespace _9._Palindrome_Number;
+
+public class Solution
+{
+    public bool IsPalindrome(int x)
+    {
+        if (x < 0)
+            return false;
+        if (x < 10)
+            return true;
+        List<byte> digits = new List<byte>(32);
+        while (x != 0)
+        {
+            digits.Add((byte)(x%10));
+            x /= 10;
+        }
+
+        int half = digits.Count / 2;
+        for (int i = 0; i < half; i++)
+            if (digits[i] != digits[digits.Count - 1 - i])
+                return false;
+
+        return true;
+    }
+}