write a function called strexpand which accepts string of where letters are all grouped together $($like aaee or bbccdd$)$ and returns a new strings with each letter followed by a count of a the number of times it appears. For instance, given the input "aaee" you would return $"$a$2$e$2$"strExpand

Write a function called strexpand which accepts string of where letters

are all grouped together $($like aaee or bbccdd$)$ and returns a new string

with each letter followed by a count of a the number of times it

appears. For instance, given the input "aaee" you would return

$"$a$2$e$2".$

Hint: using an object to keep track of each letter and the number

of times it appears will be very helpful.

Examples:

strExpand$(\text{'}aeebbccd\text{'})\frac{\frac{?}{?}}{\text{'}}a1e2b2c2d1\text{'}$

strExpand$(apple)$;$\frac{\frac{?}{?}}{a}1p2l1e1$

strExpand$(pppaaalll)$;$\frac{\frac{?}{?}}{o}2p3a4l\mathrm{.}3$

strExpand$(bbccdd)$;$\frac{\frac{?}{?}}{b}2c2d2$

$1>$ 'use strict'; dots

$/*$

Complete the 'strexpand' function below.

The function is expected to return a STRING,

The function accepts STRING str as parameter.

$**\frac{*}{?}$

function strexpand$($str$)\{$

$\}$

$>$ function main$()$

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Debug function strexpand with your own input

String str