"Android: Displaying Levels At Optimum Zoom" helper functions for GameDevAlgorithms

DisplayHelper.java

    public int getTileWidth() {
        return dpToPixel(Constants.TILE_WIDTH);
    }

    public int getTileHeight() {
        return dpToPixel(Constants.TILE_HEIGHT);
    }

    public int dpToPixel(float dp) {
        Resources resources = context.getResources();
        DisplayMetrics metrics = resources.getDisplayMetrics();
        float px = dp * ((float) metrics.densityDpi / DisplayMetrics.DENSITY_DEFAULT);
        return (int) px;
    }

TileHelper.java

    public static Pair<Integer, Integer> getMaxXY(List<Tile> tiles) {
        int maxX = 0;
        int maxY = 0;
        for (Tile tile : tiles) {
            if (tile.getX() > maxX) {
                maxX = tile.getX();
            }
            if (tile.getY() > maxY) {
                maxY = tile.getY();
            }
        }
        return new Pair<>(maxX, maxY);
    }