Angular ng-repeat element count

<li ng-repeat="Item in Items">
            <div ng-switch="($index)==0">
                <div ng-switch-when="true">
                    <a href="#"><   Previous</a>
                </div>
                <div ng-switch-when="false">
                    <a href="#">{{$index}}</a>
                </div>
            </div>
        </li>