homework 5 first commit

src/main/java/ArrayManager.java

@@ -0,0 +1,55 @@
+public class ArrayManager {
+
+    private static final int size = 10000000;
+    private static final int h = size / 2;
+    private float[] arr = new float[size];
+
+    private void addOneForAllValues(){
+        for (int i=0;i<arr.length;i++){
+            arr[i] = 1;
+        }
+    }
+
+    public void fillArray(){
+        addOneForAllValues();
+        long start = System.currentTimeMillis();
+        for (int i=0;i<arr.length;i++){
+            arr[i] = (float)(arr[i] * Math.sin(0.2f + i / 5) * Math.cos(0.2f + i / 5) * Math.cos(0.4f + i / 2));
+        }
+        System.out.println(System.currentTimeMillis() - start);
+    }
+
+    public void synchFillArray(){
+        float[] a1 = new float[h];
+        float[] a2 = new float[h];
+        addOneForAllValues();
+        long start = System.currentTimeMillis();
+        System.arraycopy(arr,0,a1,0,h);
+        System.arraycopy(arr,h,a2,0,h);
+        Thread thread = new Thread(new Runnable() {
+            @Override
+            public void run() {
+                for (int i=0;i<a1.length;i++){
+                    a1[i] =  (float)(arr[i] * Math.sin(0.2f + i / 5) * Math.cos(0.2f + i / 5) * Math.cos(0.4f + i / 2));
+                }
+            }
+        });
+        Thread thread2 = new Thread(new Runnable() {
+            @Override
+            public void run() {
+                for (int i=0;i<a1.length;i++){
+                    a2[i] =  (float)(arr[i] * Math.sin(0.2f + i / 5) * Math.cos(0.2f + i / 5) * Math.cos(0.4f + i / 2));
+                }
+            }
+        });
+
+        thread.start();
+        thread2.start();
+
+        System.arraycopy(a1, 0, arr, 0, h);
+        System.arraycopy(a2, 0, arr, h, h);
+
+        System.out.println("synchronyzed method finish");
+        System.out.println(System.currentTimeMillis() - start);
+    }
+}

src/main/java/Main.java

@@ -1,6 +1,9 @@
 public class Main {
 
   public static void main(String[] args){
-  System.out.println("test");
+
+    ArrayManager arrayManager = new ArrayManager();
+    arrayManager.fillArray();
+    arrayManager.synchFillArray();
   }
 }