Convert array moving from java code to native system call

src/IntSorting.java

@@ -129,8 +129,7 @@ public class IntSorting {
          //Move array and insert value
          if (middle < i) {
             int tmp = a[i];
-            for (int j = i - 1; j >= middle; j--)
-               a[j + 1] = a[j];
+            System.arraycopy(a, 0, a, 1, i);
             a[middle] = tmp;
          }
       }