Merge pull request neetcode-gh#835 from notauserx/Create-647-Palindromic-Substrings.cs

Create 647-Palindromic-Substrings.cs

Author: Ahmad-A0

csharp/647-Palindromic-Substrings.cs

@@ -0,0 +1,23 @@
+public class Solution {
+    public int CountSubstrings(string s) {
+        var count = 0;
+        
+        for(var i = 0; i < s.Length; i++) {
+            count += getPalindromeCount(s, i, i);
+            count += getPalindromeCount(s, i, i + 1);
+        }
+        
+        return count;
+    }
+    
+    public int getPalindromeCount(string s, int l, int r) {
+        var count = 0;
+        
+        while(l >=0 && r < s.Length && s[l] == s[r]) {
+            count++;
+            l--;
+            r++;
+        }
+        return count;
+    }
+}