add: 220602 [cpp]

cpp/2206/220602.cpp

@@ -0,0 +1,19 @@
+#include <vector>
+
+/**
+ * 867. Transpose Matrix
+ * Given a 2D integer array matrix, return the transpose of matrix.
+ * The transpose of a matrix is the matrix flipped over its main diagonal, switching the matrix's row and column indices.
+ */
+
+class Solution {
+public:
+	static std::vector<std::vector<int>> transpose(std::vector<std::vector<int>>& matrix) {
+		const int m = matrix.size(), n = matrix.front().size();
+		std::vector<std::vector<int>> ret(n, std::vector<int>(m));
+		for (int i = 0; i < m; ++i)
+			for (int j = 0; j < n; ++j)
+				ret[j][i] = matrix[i][j];
+		return ret;
+	}
+};

cpp/2206/CMakeLists.txt

@@ -3,4 +3,4 @@ PROJECT(2206)
 
 SET(CMAKE_CXX_STANDARD 23)
 
-ADD_EXECUTABLE(2206 220601-CN.cpp)
+ADD_EXECUTABLE(2206 220602.cpp)