From 417dcdacf02df820d304e6d8e6c0997880ba5725 Mon Sep 17 00:00:00 2001
From: ByteHamster <info@bytehamster.com>
Date: Thu, 2 Jan 2020 18:16:40 +0100
Subject: [PATCH 1/4] Removed API checks

---
 .../UserInterfacePreferencesFragment.java           | 13 -------------
 .../core/service/PlayerWidgetJobService.java        |  8 ++------
 core/src/main/res/values-v16/styles.xml             |  9 ---------
 core/src/main/res/values/styles.xml                 |  1 +
 4 files changed, 3 insertions(+), 28 deletions(-)
 delete mode 100644 core/src/main/res/values-v16/styles.xml

diff --git a/app/src/main/java/de/danoeh/antennapod/fragment/preferences/UserInterfacePreferencesFragment.java b/app/src/main/java/de/danoeh/antennapod/fragment/preferences/UserInterfacePreferencesFragment.java
index 191999cf7..0acfe60bf 100644
--- a/app/src/main/java/de/danoeh/antennapod/fragment/preferences/UserInterfacePreferencesFragment.java
+++ b/app/src/main/java/de/danoeh/antennapod/fragment/preferences/UserInterfacePreferencesFragment.java
@@ -33,19 +33,6 @@ public class UserInterfacePreferencesFragment extends PreferenceFragmentCompat {
     }
 
     private void setupInterfaceScreen() {
-
-        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN) {
-            // disable expanded notification option on unsupported android versions
-            findPreference(PREF_EXPANDED_NOTIFICATION).setEnabled(false);
-            findPreference(PREF_EXPANDED_NOTIFICATION).setOnPreferenceClickListener(
-                    preference -> {
-                        Toast toast = Toast.makeText(getActivity(),
-                                R.string.pref_expand_notify_unsupport_toast, Toast.LENGTH_SHORT);
-                        toast.show();
-                        return true;
-                    }
-            );
-        }
         findPreference(UserPreferences.PREF_THEME)
                 .setOnPreferenceChangeListener(
                         (preference, newValue) -> {
diff --git a/core/src/main/java/de/danoeh/antennapod/core/service/PlayerWidgetJobService.java b/core/src/main/java/de/danoeh/antennapod/core/service/PlayerWidgetJobService.java
index 2d9de1894..e6f2176f7 100644
--- a/core/src/main/java/de/danoeh/antennapod/core/service/PlayerWidgetJobService.java
+++ b/core/src/main/java/de/danoeh/antennapod/core/service/PlayerWidgetJobService.java
@@ -159,14 +159,10 @@ public class PlayerWidgetJobService extends SafeJobIntentService {
 
             if (status == PlayerStatus.PLAYING) {
                 views.setImageViewResource(R.id.butPlay, R.drawable.ic_pause_white_24dp);
-                if (Build.VERSION.SDK_INT >= 15) {
-                    views.setContentDescription(R.id.butPlay, getString(R.string.pause_label));
-                }
+                views.setContentDescription(R.id.butPlay, getString(R.string.pause_label));
             } else {
                 views.setImageViewResource(R.id.butPlay, R.drawable.ic_play_arrow_white_24dp);
-                if (Build.VERSION.SDK_INT >= 15) {
-                    views.setContentDescription(R.id.butPlay, getString(R.string.play_label));
-                }
+                views.setContentDescription(R.id.butPlay, getString(R.string.play_label));
             }
             views.setOnClickPendingIntent(R.id.butPlay, createMediaButtonIntent());
         } else {
diff --git a/core/src/main/res/values-v16/styles.xml b/core/src/main/res/values-v16/styles.xml
deleted file mode 100644
index 947e43f38..000000000
--- a/core/src/main/res/values-v16/styles.xml
+++ /dev/null
@@ -1,9 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<resources>
-
-    <style name="AntennaPod.TextView.Heading" parent="@android:style/TextAppearance.Medium">
-        <item name="android:textSize">@dimen/text_size_large</item>
-        <item name="android:textColor">?android:attr/textColorPrimary</item>
-        <item name="android:fontFamily">sans-serif-light</item>
-    </style>
-</resources>
\ No newline at end of file
diff --git a/core/src/main/res/values/styles.xml b/core/src/main/res/values/styles.xml
index a638917f4..2ccd48353 100644
--- a/core/src/main/res/values/styles.xml
+++ b/core/src/main/res/values/styles.xml
@@ -279,6 +279,7 @@
     <style name="AntennaPod.TextView.Heading" parent="@android:style/TextAppearance.Medium">
         <item name="android:textSize">@dimen/text_size_large</item>
         <item name="android:textColor">?android:attr/textColorPrimary</item>
+        <item name="android:fontFamily">sans-serif-light</item>
     </style>
 
     <style name="AntennaPod.TextView.ListItemPrimaryTitle" parent="@android:style/TextAppearance.Small">

From 8119b4a8e1b1eab63821cdbca4f5fe4ac8ad5b81 Mon Sep 17 00:00:00 2001
From: ByteHamster <info@bytehamster.com>
Date: Thu, 2 Jan 2020 18:21:01 +0100
Subject: [PATCH 2/4] Replaced custom background with selectableItemBackground

---
 app/src/main/res/layout/audio_controls.xml     |  4 ++--
 .../res/layout/media_router_controller.xml     |  2 +-
 .../res/drawable/borderless_button_dark.xml    | 18 ------------------
 core/src/main/res/values-v16/colors.xml        |  4 ----
 core/src/main/res/values/attrs.xml             |  1 -
 5 files changed, 3 insertions(+), 26 deletions(-)
 delete mode 100644 core/src/main/res/drawable/borderless_button_dark.xml
 delete mode 100644 core/src/main/res/values-v16/colors.xml

diff --git a/app/src/main/res/layout/audio_controls.xml b/app/src/main/res/layout/audio_controls.xml
index 5049db215..25e914c55 100644
--- a/app/src/main/res/layout/audio_controls.xml
+++ b/app/src/main/res/layout/audio_controls.xml
@@ -43,7 +43,7 @@
             android:textStyle="bold"
             android:textColor="@color/status_progress"
             android:textSize="24sp"
-            android:background="@drawable/borderless_button_dark"/>
+            android:background="?android:attr/selectableItemBackground"/>
 
         <Button
             android:id="@+id/butIncSpeed"
@@ -57,7 +57,7 @@
             android:textStyle="bold"
             android:textColor="@color/status_progress"
             android:textSize="24sp"
-            android:background="@drawable/borderless_button_dark"/>
+            android:background="?android:attr/selectableItemBackground"/>
 
         <SeekBar
             android:id="@+id/playback_speed"
diff --git a/app/src/play/res/layout/media_router_controller.xml b/app/src/play/res/layout/media_router_controller.xml
index 9489173a3..bdb1b1cc2 100644
--- a/app/src/play/res/layout/media_router_controller.xml
+++ b/app/src/play/res/layout/media_router_controller.xml
@@ -17,7 +17,7 @@
         android:layout_alignParentRight="true"
         android:layout_alignParentEnd="true"
         android:contentDescription="@string/mr_controller_play"
-        android:background="?attr/selectableItemBackgroundBorderless"/>
+        android:background="?android:attr/selectableItemBackground"/>
 
     <LinearLayout android:id="@+id/mrc_control_title_container"
         android:orientation="vertical"
diff --git a/core/src/main/res/drawable/borderless_button_dark.xml b/core/src/main/res/drawable/borderless_button_dark.xml
deleted file mode 100644
index 3a44d81a2..000000000
--- a/core/src/main/res/drawable/borderless_button_dark.xml
+++ /dev/null
@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<selector xmlns:android="http://schemas.android.com/apk/res/android">
-    <item android:state_pressed="true">
-        <shape android:shape="rectangle">
-            <solid android:color="@color/selection_background_color_dark" />
-        </shape>
-    </item>
-    <item android:state_focused="true">
-        <shape android:shape="rectangle">
-            <solid android:color="@color/selection_background_color_dark" />
-        </shape>
-    </item>
-    <item>
-        <shape android:shape="rectangle">
-            <solid android:color="@android:color/transparent" />
-        </shape>
-    </item>
-</selector>
\ No newline at end of file
diff --git a/core/src/main/res/values-v16/colors.xml b/core/src/main/res/values-v16/colors.xml
deleted file mode 100644
index 4154280e8..000000000
--- a/core/src/main/res/values-v16/colors.xml
+++ /dev/null
@@ -1,4 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<resources>
-    <color name="selection_background_color_dark">#484B4D</color>
-</resources>
\ No newline at end of file
diff --git a/core/src/main/res/values/attrs.xml b/core/src/main/res/values/attrs.xml
index fe571539a..755bbac58 100644
--- a/core/src/main/res/values/attrs.xml
+++ b/core/src/main/res/values/attrs.xml
@@ -28,7 +28,6 @@
     <attr name="ic_folder" format="reference"/>
     <attr name="type_audio" format="reference"/>
     <attr name="type_video" format="reference"/>
-    <attr name="borderless_button" format="reference"/>
     <attr name="overlay_drawable" format="reference"/>
     <attr name="dragview_background" format="reference"/>
     <attr name="dragview_float_background" format="reference"/>

From 687693ccb0ce298aab02e6829ba97ae9836d8658 Mon Sep 17 00:00:00 2001
From: ByteHamster <info@bytehamster.com>
Date: Thu, 2 Jan 2020 18:29:45 +0100
Subject: [PATCH 3/4] Removed unused methods

---
 .../test/antennapod/storage/DBReaderTest.java |  1 -
 .../de/test/antennapod/ui/UITestUtils.java    |  9 ----
 .../antennapod/core/storage/DBReader.java     | 11 -----
 .../antennapod/core/storage/DBTasks.java      | 12 ------
 .../antennapod/core/storage/PodDBAdapter.java | 43 -------------------
 5 files changed, 76 deletions(-)

diff --git a/app/src/androidTest/java/de/test/antennapod/storage/DBReaderTest.java b/app/src/androidTest/java/de/test/antennapod/storage/DBReaderTest.java
index 647ab911f..459cd2478 100644
--- a/app/src/androidTest/java/de/test/antennapod/storage/DBReaderTest.java
+++ b/app/src/androidTest/java/de/test/antennapod/storage/DBReaderTest.java
@@ -368,7 +368,6 @@ public class DBReaderTest {
 
     @Test
     public void testGetFeedItemlistCheckChaptersFalse() throws Exception {
-        Context context = InstrumentationRegistry.getTargetContext();
         List<Feed> feeds = DBTestUtils.saveFeedlist(10, 10, false, false, 0);
         for (Feed feed : feeds) {
             for (FeedItem item : feed.getItems()) {
diff --git a/app/src/androidTest/java/de/test/antennapod/ui/UITestUtils.java b/app/src/androidTest/java/de/test/antennapod/ui/UITestUtils.java
index 8e16d1a3b..e95f0990e 100644
--- a/app/src/androidTest/java/de/test/antennapod/ui/UITestUtils.java
+++ b/app/src/androidTest/java/de/test/antennapod/ui/UITestUtils.java
@@ -98,15 +98,6 @@ public class UITestUtils {
         return String.format("%s/files/%d", server.getBaseUrl(), id);
     }
 
-    private File newBitmapFile(String name) throws IOException {
-        File imgFile = new File(destDir, name);
-        Bitmap bitmap = Bitmap.createBitmap(128, 128, Bitmap.Config.ARGB_8888);
-        FileOutputStream out = new FileOutputStream(imgFile);
-        bitmap.compress(Bitmap.CompressFormat.PNG, 1, out);
-        out.close();
-        return imgFile;
-    }
-
     private File newMediaFile(String name) throws IOException {
         File mediaFile = new File(hostedMediaDir, name);
         if (mediaFile.exists()) {
diff --git a/core/src/main/java/de/danoeh/antennapod/core/storage/DBReader.java b/core/src/main/java/de/danoeh/antennapod/core/storage/DBReader.java
index 8b87d7c54..c2076c669 100644
--- a/core/src/main/java/de/danoeh/antennapod/core/storage/DBReader.java
+++ b/core/src/main/java/de/danoeh/antennapod/core/storage/DBReader.java
@@ -507,17 +507,6 @@ public final class DBReader {
         }
     }
 
-    /**
-     * Loads the download log for a particular feed from the database.
-     *
-     * @param feed Feed for which the download log is loaded
-     * @return A list with DownloadStatus objects that represent the feed's download log,
-     * newest events first.
-     */
-    public static List<DownloadStatus> getFeedDownloadLog(Feed feed) {
-        return getFeedDownloadLog(feed.getId());
-    }
-
     /**
      * Loads the download log for a particular feed from the database.
      *
diff --git a/core/src/main/java/de/danoeh/antennapod/core/storage/DBTasks.java b/core/src/main/java/de/danoeh/antennapod/core/storage/DBTasks.java
index c4a06efa2..20067624b 100644
--- a/core/src/main/java/de/danoeh/antennapod/core/storage/DBTasks.java
+++ b/core/src/main/java/de/danoeh/antennapod/core/storage/DBTasks.java
@@ -379,18 +379,6 @@ public final class DBTasks {
         return result;
     }
 
-    /**
-     * Loads the queue from the database and checks if the specified FeedItem is in the queue.
-     * This method should NOT be executed in the GUI thread.
-     *
-     * @param context    Used for accessing the DB.
-     * @param feedItemId ID of the FeedItem
-     */
-    public static boolean isInQueue(Context context, final long feedItemId) {
-        LongList queue = DBReader.getQueueIDList();
-        return queue.contains(feedItemId);
-    }
-
     private static Feed searchFeedByIdentifyingValueOrID(PodDBAdapter adapter,
                                                          Feed feed) {
         if (feed.getId() != 0) {
diff --git a/core/src/main/java/de/danoeh/antennapod/core/storage/PodDBAdapter.java b/core/src/main/java/de/danoeh/antennapod/core/storage/PodDBAdapter.java
index 1aff73564..ce8342d57 100644
--- a/core/src/main/java/de/danoeh/antennapod/core/storage/PodDBAdapter.java
+++ b/core/src/main/java/de/danoeh/antennapod/core/storage/PodDBAdapter.java
@@ -904,49 +904,6 @@ public class PodDBAdapter {
                         null, null);
     }
 
-    /**
-     * Returns a cursor for a DB query in the FeedImages table for given IDs.
-     *
-     * @param imageIds IDs of the images
-     * @return The cursor of the query
-     */
-    public final Cursor getImageCursor(String... imageIds) {
-        int length = imageIds.length;
-        if (length > IN_OPERATOR_MAXIMUM) {
-            Log.w(TAG, "Length of id array is larger than "
-                    + IN_OPERATOR_MAXIMUM + ". Creating multiple cursors");
-            int numCursors = (int) (((double) length) / (IN_OPERATOR_MAXIMUM)) + 1;
-            Cursor[] cursors = new Cursor[numCursors];
-            for (int i = 0; i < numCursors; i++) {
-                int neededLength;
-                String[] parts;
-                final int elementsLeft = length - i * IN_OPERATOR_MAXIMUM;
-
-                if (elementsLeft >= IN_OPERATOR_MAXIMUM) {
-                    neededLength = IN_OPERATOR_MAXIMUM;
-                    parts = Arrays.copyOfRange(imageIds, i
-                            * IN_OPERATOR_MAXIMUM, (i + 1)
-                            * IN_OPERATOR_MAXIMUM);
-                } else {
-                    neededLength = elementsLeft;
-                    parts = Arrays.copyOfRange(imageIds, i
-                            * IN_OPERATOR_MAXIMUM, (i * IN_OPERATOR_MAXIMUM)
-                            + neededLength);
-                }
-
-                cursors[i] = db.rawQuery("SELECT * FROM "
-                        + TABLE_NAME_FEED_IMAGES + " WHERE " + KEY_ID + " IN "
-                        + buildInOperator(neededLength), parts);
-            }
-            Cursor result = new MergeCursor(cursors);
-            result.moveToFirst();
-            return result;
-        } else {
-            return db.query(TABLE_NAME_FEED_IMAGES, null, KEY_ID + " IN "
-                    + buildInOperator(length), imageIds, null, null, null);
-        }
-    }
-
     public final Cursor getSimpleChaptersOfFeedItemCursor(final FeedItem item) {
         return db.query(TABLE_NAME_SIMPLECHAPTERS, null, KEY_FEEDITEM
                         + "=?", new String[]{String.valueOf(item.getId())}, null,

From 44bb7d53a2d05e67eedaadf11f97559fbb713f38 Mon Sep 17 00:00:00 2001
From: ByteHamster <info@bytehamster.com>
Date: Thu, 2 Jan 2020 18:34:46 +0100
Subject: [PATCH 4/4] Removed custom ArrayList implementation that was only
 used in one location

---
 .../PlaybackServiceNotificationBuilder.java   |   7 +-
 .../danoeh/antennapod/core/util/IntList.java  | 240 ------------------
 2 files changed, 4 insertions(+), 243 deletions(-)
 delete mode 100644 core/src/main/java/de/danoeh/antennapod/core/util/IntList.java

diff --git a/core/src/main/java/de/danoeh/antennapod/core/service/playback/PlaybackServiceNotificationBuilder.java b/core/src/main/java/de/danoeh/antennapod/core/service/playback/PlaybackServiceNotificationBuilder.java
index 6219fe78c..174b43846 100644
--- a/core/src/main/java/de/danoeh/antennapod/core/service/playback/PlaybackServiceNotificationBuilder.java
+++ b/core/src/main/java/de/danoeh/antennapod/core/service/playback/PlaybackServiceNotificationBuilder.java
@@ -25,10 +25,11 @@ import de.danoeh.antennapod.core.preferences.UserPreferences;
 import de.danoeh.antennapod.core.receiver.MediaButtonReceiver;
 import de.danoeh.antennapod.core.util.Converter;
 import de.danoeh.antennapod.core.feed.util.ImageResourceUtils;
-import de.danoeh.antennapod.core.util.IntList;
 import de.danoeh.antennapod.core.util.TimeSpeedConverter;
 import de.danoeh.antennapod.core.util.gui.NotificationUtils;
 import de.danoeh.antennapod.core.util.playback.Playable;
+import java.util.ArrayList;
+import org.apache.commons.lang3.ArrayUtils;
 
 public class PlaybackServiceNotificationBuilder {
     private static final String TAG = "PlaybackSrvNotification";
@@ -151,7 +152,7 @@ public class PlaybackServiceNotificationBuilder {
 
     private void addActions(NotificationCompat.Builder notification, MediaSessionCompat.Token mediaSessionToken,
                             PlayerStatus playerStatus, boolean isCasting) {
-        IntList compactActionList = new IntList();
+        ArrayList<Integer> compactActionList = new ArrayList<>();
 
         int numActions = 0; // we start and 0 and then increment by 1 for each call to addAction
 
@@ -218,7 +219,7 @@ public class PlaybackServiceNotificationBuilder {
                 KeyEvent.KEYCODE_MEDIA_STOP, numActions);
         notification.setStyle(new androidx.media.app.NotificationCompat.MediaStyle()
                 .setMediaSession(mediaSessionToken)
-                .setShowActionsInCompactView(compactActionList.toArray())
+                .setShowActionsInCompactView(ArrayUtils.toPrimitive(compactActionList.toArray(new Integer[0])))
                 .setShowCancelButton(true)
                 .setCancelButtonIntent(stopButtonPendingIntent));
     }
diff --git a/core/src/main/java/de/danoeh/antennapod/core/util/IntList.java b/core/src/main/java/de/danoeh/antennapod/core/util/IntList.java
deleted file mode 100644
index 1da5417c1..000000000
--- a/core/src/main/java/de/danoeh/antennapod/core/util/IntList.java
+++ /dev/null
@@ -1,240 +0,0 @@
-package de.danoeh.antennapod.core.util;
-
-import java.util.Arrays;
-
-/**
- * Fast and memory efficient int list
- */
-public final class IntList {
-
-    private int[] values;
-    private int size;
-
-    /**
-     * Constructs an empty instance with a default initial capacity.
-     */
-    public IntList() {
-        this(4);
-    }
-
-    /**
-     * Constructs an empty instance.
-     *
-     * @param initialCapacity {@code >= 0;} initial capacity of the list
-     */
-    private IntList(int initialCapacity) {
-        if(initialCapacity < 0) {
-            throw new IllegalArgumentException("initial capacity must be 0 or higher");
-        }
-        values = new int[initialCapacity];
-        size = 0;
-    }
-
-    @Override
-    public int hashCode() {
-        int hashCode = 1;
-        for (int i = 0; i < size; i++) {
-            int value = values[i];
-            hashCode = 31 * hashCode + value;
-        }
-        return hashCode;
-    }
-
-    @Override
-    public boolean equals(Object other) {
-        if (other == this) {
-            return true;
-        }
-        if (! (other instanceof IntList)) {
-            return false;
-        }
-        IntList otherList = (IntList) other;
-        if (size != otherList.size) {
-            return false;
-        }
-        for (int i = 0; i < size; i++) {
-            if (values[i] != otherList.values[i]) {
-                return false;
-            }
-        }
-        return true;
-    }
-
-    @Override
-    public String toString() {
-        StringBuilder sb = new StringBuilder(size * 5 + 10);
-        sb.append("IntList{");
-        for (int i = 0; i < size; i++) {
-            if (i != 0) {
-                sb.append(", ");
-            }
-            sb.append(values[i]);
-        }
-        sb.append("}");
-        return sb.toString();
-    }
-
-    /**
-     * Gets the number of elements in this list.
-     */
-    public int size() {
-        return size;
-    }
-
-    /**
-     * Gets the indicated value.
-     *
-     * @param n {@code >= 0, < size();} which element
-     * @return the indicated element's value
-     */
-    public int get(int n) {
-        if (n >= size) {
-            throw new IndexOutOfBoundsException("n >= size()");
-        } else if(n < 0) {
-            throw new IndexOutOfBoundsException("n < 0");
-        }
-        return values[n];
-    }
-
-    /**
-     * Sets the value at the given index.
-     *
-     * @param index the index at which to put the specified object.
-     * @param value the object to add.
-     * @return the previous element at the index.
-     */
-    public int set(int index, int value) {
-        if (index >= size) {
-            throw new IndexOutOfBoundsException("n >= size()");
-        } else if(index < 0) {
-            throw new IndexOutOfBoundsException("n < 0");
-        }
-        int result = values[index];
-        values[index] = value;
-        return result;
-    }
-
-    /**
-     * Adds an element to the end of the list. This will increase the
-     * list's capacity if necessary.
-     *
-     * @param value the value to add
-     */
-    public void add(int value) {
-        growIfNeeded();
-        values[size++] = value;
-    }
-
-    /**
-     * Inserts element into specified index, moving elements at and above
-     * that index up one. May not be used to insert at an index beyond the
-     * current size (that is, insertion as a last element is legal but
-     * no further).
-     *
-     * @param n {@code >= 0, <=size();} index of where to insert
-     * @param value value to insert
-     */
-    public void insert(int n, int value) {
-        if (n > size) {
-            throw new IndexOutOfBoundsException("n > size()");
-        } else if(n < 0) {
-            throw new IndexOutOfBoundsException("n < 0");
-        }
-
-        growIfNeeded();
-
-        System.arraycopy (values, n, values, n+1, size - n);
-        values[n] = value;
-        size++;
-    }
-
-    /**
-     * Removes value from this list.
-     *
-     * @param value  value to remove
-     * return {@code true} if the value was removed, {@code false} otherwise
-     */
-    public boolean remove(int value) {
-        for (int i = 0; i < size; i++) {
-            if (values[i] == value) {
-                size--;
-                System.arraycopy(values, i+1, values, i, size-i);
-                return true;
-            }
-        }
-        return false;
-    }
-
-    /**
-     * Removes an element at a given index, shifting elements at greater
-     * indicies down one.
-     *
-     * @param index index of element to remove
-     */
-    public void removeIndex(int index) {
-        if (index >= size) {
-            throw new IndexOutOfBoundsException("n >= size()");
-        } else if(index < 0) {
-            throw new IndexOutOfBoundsException("n < 0");
-        }
-        size--;
-        System.arraycopy (values, index + 1, values, index, size - index);
-    }
-
-    /**
-     * Increases size of array if needed
-     */
-    private void growIfNeeded() {
-        if (size == values.length) {
-            // Resize.
-            int[] newArray = new int[size * 3 / 2 + 10];
-            System.arraycopy(values, 0, newArray, 0, size);
-            values = newArray;
-        }
-    }
-
-    /**
-     * Returns the index of the given value, or -1 if the value does not
-     * appear in the list.
-     *
-     * @param value value to find
-     * @return index of value or -1
-     */
-    private int indexOf(int value) {
-        for (int i = 0; i < size; i++) {
-            if (values[i] == value) {
-                return i;
-            }
-        }
-        return -1;
-    }
-
-    /**
-     * Removes all values from this list.
-     */
-    public void clear() {
-        values = new int[4];
-        size = 0;
-    }
-
-
-    /**
-     * Returns true if the given value is contained in the list
-     *
-     * @param value value to look for
-     * @return {@code true} if this list contains {@code value}, {@code false} otherwise
-     */
-    public boolean contains(int value) {
-        return indexOf(value) >= 0;
-    }
-
-    /**
-     * Returns an array with a copy of this list's values
-     *
-     * @return array with a copy of this list's values
-     */
-    public int[] toArray() {
-        return Arrays.copyOf(values, size);
-
-    }
-}