2330 solved.

liuyubobobo · liuyubobobo · commit ebfbe7dd473d · 2022-07-10T15:28:43.000-07:00
diff --git a/2001-2500/2330-Valid-Palindrome-IV/cpp-2330/CMakeLists.txt b/2001-2500/2330-Valid-Palindrome-IV/cpp-2330/CMakeLists.txt
@@ -0,0 +1,6 @@
+cmake_minimum_required(VERSION 3.22)
+project(cpp_2330)
+
+set(CMAKE_CXX_STANDARD 14)
+
+add_executable(cpp_2330 main.cpp)
diff --git a/2001-2500/2330-Valid-Palindrome-IV/cpp-2330/main.cpp b/2001-2500/2330-Valid-Palindrome-IV/cpp-2330/main.cpp
@@ -0,0 +1,29 @@
+/// Source : https://leetcode.com/problems/valid-palindrome-iv/
+/// Author : liuyubobobo
+/// Time   : 2022-07-10
+
+#include <iostream>
+
+using namespace std;
+
+
+/// Ad-Hoc
+/// Time Complexity: O(n)
+/// Space Complexity: O(1)
+class Solution {
+public:
+    bool makePalindrome(string s) {
+
+        int n = s.size(), res = 0;
+        for(int i = 0, j = n - 1; i < j; i ++, j --)
+            res += s[i] != s[j];
+
+        return res <= 2;
+    }
+};
+
+
+int main() {
+
+    return 0;
+}
diff --git a/readme.md b/readme.md
@@ -2176,7 +2176,7 @@ email: [liuyubobobo@gmail.com](mailto:liuyubobobo@gmail.com)
 | 2327 | [Number of People Aware of a Secret](https://leetcode.com/problems/number-of-people-aware-of-a-secret/) | [无] | [C++](2001-2500/2327-Number-of-People-Aware-of-a-Secret/cpp-2327/) | | |
 | 2328 | [Number of Increasing Paths in a Grid](https://leetcode.com/problems/number-of-increasing-paths-in-a-grid/) | [无] | [C++](2001-2500/2328-Number-of-Increasing-Paths-in-a-Grid/cpp-2328/) | | |
 | 2329 | Database Problem: [Link](https://github.com/liuyubobobo/Play-Leetcode-Database/) | - | - | - | - |
-| | | | | | |
+| 2330 | [Valid Palindrome IV](https://leetcode.com/problems/valid-palindrome-iv/) | [无] | [C++](2001-2500/2330-Valid-Palindrome-IV/cpp-2330/) | | |
 | 2331 | [Evaluate Boolean Binary Tree](https://leetcode.com/problems/evaluate-boolean-binary-tree/) | [无] | [C++](2001-2500/2331-Evaluate-Boolean-Binary-Tree/cpp-2331/) | | |
 | | | | | | |
 | 2333 | [Minimum Sum of Squared Difference](https://leetcode.com/problems/minimum-sum-of-squared-difference/) | [无] | [C++](2001-2500/2333-Minimum-Sum-of-Squared-Difference/cpp-2333/) | | |
