add: 220204

2202/220204.cpp

@@ -0,0 +1,25 @@
+#include <vector>
+#include <unordered_map>
+#include <iostream>
+
+class Solution {
+public:
+	static int findMaxLength(const std::vector<int>& nums) {
+		int sum = 0, n = nums.size(), ret = 0;
+		std::unordered_map<int, int> m;
+		m[0] = -1;
+		for (int i = 0; i < n; ++i) {
+			sum += 1 - (nums[i] << 1);
+			if (m.count(sum))
+				ret = ret < i - m[sum] ? i - m[sum] : ret;
+			else
+				m[sum] = i;
+		}
+		return ret;
+	}
+};
+
+int main() {
+	std::cout << Solution::findMaxLength({0,1,0});
+	return 0;
+}

2202/CMakeLists.txt

@@ -3,4 +3,4 @@ PROJECT(2202)
 
 SET(CMAKE_CXX_STANDARD 23)
 
-ADD_EXECUTABLE(2202 220203-CN.cpp)
+ADD_EXECUTABLE(2202 220204.cpp)