$541660\mathrm{.}3383210.$qx$3$zqy$7$

In the following program, print the sum of the first and last element in the partially filled array prices with companion variable numberofPrices.

double price $=$ in$.$ nextDouble$()$;

if $($numberOfPrices $$ LENGTH$)$

$\{$

prices$[$number$0$fPrices$]=$ price;

$\}$

number$0$fPrices$++$;

$\}$

double sum $\frac{?}{*}=*$ Your code goes here $*/$;

System.out.printf$("$Sum of first and last: $\%\mathrm{.}2\%$ n$",$ sum$)$;

$\}$

$\}$