typos

src/App.java

@@ -10,7 +10,7 @@ class MyTimer{
     void toc(){
         long end = System.nanoTime();          
         long time = end-begin;
-        System.out.println("Elapsed Time: " + time/1000 + " ms.");
+        System.out.println("Elapsed Time: " + time/1000 + " µs.");
     }
   
 }
@@ -45,9 +45,11 @@ public class App {
         MyTimer timer = new MyTimer();
 
         int[] filteredData = new int[data.length];
-        // data=filteredData => data & filteredData will point the same object in Object space
-        System.arraycopy(data,0,filteredData,0,data.length); // => data & filteredData will point the 2 similar objects in Object space
+        // filteredData=data; => data & filteredData will point the same object in Object space
+        System.arraycopy(data,0,filteredData,0,data.length); // => data & filteredData will point the 2 different objects in Object space
+        timer.tic();
         Arrays.sort(filteredData);
+        timer.toc();
         PrintData(data,filteredData);
     }