@@ -134,6 +134,24 @@ public E remove(int index) {
         return removed;
     }
 
+    /**
+     * Remove all given elements.
+     *
+     * @param target the target element to be removed.
+     * @return the number removed.
+     */
+    public int remove(E target) {
+        int count = 0;
+        for (int i = 0; i < size; ++i) {
+            if (!elements[i].equals(target)) {
+                elements[count++] = elements[i];
+            }
+        }
+        int removedCount = size - count;
+        size = count;
+        return removedCount;
+    }
+
     /**
      * Clear all elements in this list.
      */
 
@@ -47,4 +47,18 @@ void testGrow() {
         assertEquals(7, arrayList.size());
         assertEquals("[1, 2, 3, 4, 5, 6, 7]", arrayList.toString());
     }
+
+    @Test
+    void testRemove() {
+        ArrayList<String> arrayList = new ArrayList<>();
+        for (int i = 1; i <= 5; i++) {
+            arrayList.add("" + i);
+        }
+        arrayList.add("3");
+        arrayList.add(2, "3");
+        assertEquals("[1, 2, 3, 3, 4, 5, 3]", arrayList.toString());
+
+        arrayList.remove("3");
+        assertEquals("[1, 2, 4, 5]", arrayList.toString());
+    }
 }