create 0344-reverse-string-csharp

Author: thuanle123

csharp/0344-reverse-string.cs

@@ -0,0 +1,14 @@
+class Solution
+{
+    public void ReverseString(char[] s)
+    {
+        int leftPointer = 0;
+        int rightPointer = s.Length - 1;
+        while (leftPointer < rightPointer)
+        {
+            char temp = s[leftPointer];
+            s[leftPointer++] = s[rightPointer];
+            s[rightPointer--] = temp;
+        }
+    }
+}