From aab8e6466ebec62e7451e9c85cd387fe0e0465c8 Mon Sep 17 00:00:00 2001
From: Matej Focko <me@mfocko.xyz>
Date: Fri, 11 Apr 2025 09:45:36 +0200
Subject: [PATCH] =?UTF-8?q?cs:=20add=20=C2=AB2843.=20Count=20Symmetric=20I?=
=?UTF-8?q?ntegers=C2=BB?=
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URL: https://leetcode.com/problems/count-symmetric-integers/
Signed-off-by: Matej Focko <me@mfocko.xyz>
---
cs/count-symmetric-integers.cs | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
create mode 100644 cs/count-symmetric-integers.cs
diff --git a/cs/count-symmetric-integers.cs b/cs/count-symmetric-integers.cs
new file mode 100644
index 0000000..e0db2bb
--- /dev/null
+++ b/cs/count-symmetric-integers.cs
@@ -0,0 +1,19 @@
+public class Solution {
+ public int CountSymmetricIntegers(int low, int high) {
+ var count = 0;
+
+ for (var x = low; x <= high; ++x) {
+ if (x < 100 && x % 11 == 0) {
+ ++count;
+ } else if (1000 <= x && x < 10000) {
+ var left = x / 1000 + (x % 1000) / 100;
+ var right = (x % 100) / 10 + x % 10;
+ if (left == right) {
+ ++count;
+ }
+ }
+ }
+
+ return count;
+ }
+}