Java Matrix Calculation

Author: JangKeon

For Coding Test/For Coding Test.vcxproj

@@ -139,7 +139,9 @@
     </Link>
   </ItemDefinitionGroup>
   <ItemGroup>
+    <ClCompile Include="Java Matrix.cpp" />
     <ClCompile Include="string parser.cpp" />
+    <ClCompile Include="VSCode+Java.cpp" />
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">

For Coding Test/For Coding Test.vcxproj.filters

@@ -18,5 +18,11 @@
     <ClCompile Include="string parser.cpp">
       <Filter>소스 파일</Filter>
     </ClCompile>
+    <ClCompile Include="VSCode+Java.cpp">
+      <Filter>소스 파일</Filter>
+    </ClCompile>
+    <ClCompile Include="Java Matrix.cpp">
+      <Filter>소스 파일</Filter>
+    </ClCompile>
   </ItemGroup>
 </Project>

For Coding Test/Java Matrix.cpp

@@ -0,0 +1,54 @@
+// Çà·Ä µ¡¼À
+public class MatrixAddition {
+    public static void main(String[] args) {
+        int[][] a = { {1, 2}, {3, 4} };
+        int[][] b = { {5, 6}, {7, 8} };
+
+        int rows = a.length;
+        int columns = a[0].length;
+
+        int[][] result = new int[rows][columns];
+
+        for (int i = 0; i < rows; i++) {
+            for (int j = 0; j < columns; j++) {
+                result[i][j] = a[i][j] + b[i][j];
+            }
+        }
+
+        for (int i = 0; i < rows; i++) {
+            for (int j = 0; j < columns; j++) {
+                System.out.print(result[i][j] + " ");
+            }
+            System.out.println();
+        }
+    }
+}
+
+// Çà·Ä °ö¼À
+public class MatrixMultiplication {
+    public static void main(String[] args) {
+        int[][] a = { {1, 2, 3}, {4, 5, 6}, {7, 8, 9} };
+        int[][] b = { {9, 8, 7}, {6, 5, 4}, {3, 2, 1} };
+
+        int rows1 = a.length;
+        int columns1 = a[0].length;
+        int columns2 = b[0].length;
+
+        int[][] result = new int[rows1][columns2];
+
+        for (int i = 0; i < rows1; i++) {
+            for (int j = 0; j < columns2; j++) {
+                for (int k = 0; k < columns1; k++) {
+                    result[i][j] += a[i][k] * b[k][j];
+                }
+            }
+        }
+
+        for (int i = 0; i < rows1; i++) {
+            for (int j = 0; j < columns2; j++) {
+                System.out.print(result[i][j] + " ");
+            }
+            System.out.println();
+        }
+    }
+}