add: 211226

2112/211226.cpp

@@ -0,0 +1,28 @@
+#include <vector>
+#include <algorithm>
+
+struct EuclideanDistanceCompare {
+	bool operator()(const std::vector<int>& lhs, const std::vector<int>& rhs) const {
+		return lhs[0] * lhs[0] + lhs[1] * lhs[1] < rhs[0] * rhs[0] + rhs[1] * rhs[1];
+	}
+};
+
+class Solution {
+public:
+	static std::vector<std::vector<int>> kClosest(std::vector<std::vector<int>>& points, int k) {
+		std::sort(points.begin(), points.end(), EuclideanDistanceCompare{});
+		return {points.begin(), points.begin() + k};
+	}
+};
+
+int main() {
+	std::vector<std::vector<int>> s = {
+			{3, 3},
+			{5, -1},
+			{-2, 4}
+	};
+	auto ret = Solution::kClosest(s, 2);
+	for (const auto& i : ret)
+		std::printf("%d, %d\n", i[0], i[1]);
+	return 0;
+}

2112/CMakeLists.txt

@@ -3,4 +3,4 @@ PROJECT(2112)
 
 SET(CMAKE_CXX_STANDARD 23)
 
-ADD_EXECUTABLE(2112 211225.cpp)
+ADD_EXECUTABLE(2112 211226.cpp)