Create DynamicArray.java

src/main/java/com/nbee/solution/practice/DynamicArray.java

@@ -0,0 +1,33 @@
+package com.nbee.solution.practice;
+
+public class DynamicArray {
+    private int size = 0;
+    private int capacity = 8;
+    private int[] array = new int[capacity];
+
+    public void addList(int element) {
+        add(size, element);
+    }
+
+    public void add(int index, int element) {
+        if (index < 0 || index > size){
+            throw new IndexOutOfBoundsException();
+        }
+        if (index >= 0 && index < size) {
+            System.arraycopy(array, index, array, index + 1, size - index);
+        }
+        array[index] = element;
+        size++;
+    }
+
+    public int getSize() {
+        return size;
+    }
+    public int get(int index) {
+        if (index < 0 || index >= size){
+            throw new IndexOutOfBoundsException();
+        }
+        return array[index];
+    }
+}
+