feat: update structure

cs2030s/labs/Lab9/Lab9a/Lab9a.java

@@ -0,0 +1,37 @@
+import java.util.Scanner;
+import java.time.Instant;
+import java.time.Duration;
+
+/**
+ * Lab9a is the main driver class for testing matrix multiplication.
+ * Usage: java Lab9a
+ */
+class Lab9a {
+  public static void main(String[] args) {
+    Scanner scanner = new Scanner(System.in);
+    int n = scanner.nextInt();
+
+    // Read matrix 1
+    Matrix m1 = new Matrix(n);
+    for (int i = 0; i < n; i++) {
+      for (int j = 0; j < n; j++) {
+        m1.m[i][j] = scanner.nextDouble();
+      }
+    }
+
+    // Read matrix 1
+    Matrix m2 = new Matrix(n);
+    for (int i = 0; i < n; i++) {
+      for (int j = 0; j < n; j++) {
+        m2.m[i][j] = scanner.nextDouble();
+      }
+    }
+
+    // Multiply matrices
+    long startTime = System.currentTimeMillis();
+    Matrix res = Matrix.parallelMultiply(m1, m2);
+    long endTime = System.currentTimeMillis();
+    // System.out.println("Taken: " + (endTime - startTime));
+    System.out.println(res);
+  }
+}