$14\mathrm{.}1$ Applied Lab $3\mathrm{.}1$: LinkedList Update

In this Lab we update our LinkedList for use in the Mutual Fund InvestorTrack App.

Step $1$: Copy your LinkedList

Copy your completed LinkedList class from Lab $4$ into the LinkedList. java file below.

Step $2$: Add and implement the following methods into your LinkedList class:

$```$

$/**$

$*$ Returns each element in the LinkedList along with its

$*$ numerical position from $1$ to n$,$ followed by a newline.

$*/$

public String numberedListString$()\{$

return $"$

$"$;

$\}$

$/**$

$*$ Searches the LinkedList for a given element's index.

$*$ @param data the data whose index to locate.

$*$ @return the index of the data or $-1$ if the data is not contained

$*$ in the LinkedList.

$*/$

public int findIndex$($T data$)\{$

return $-1$;

$\}$

$/**$

$*$ Advances the iterator to location within the LinkedList

$*$ specified by the given index.

$```$

Follow the guidance given in the block comment for the methods.

Remember that you are not allowed to alter the LinkedList class variables and methods except to add the new methods above.