CHALLENGE

$423.$ Write a method that hides the characters in a string.

Write a method that hides the characters in a string, yielding a string of equal length $w$ example, the call hidecharacters $("$secret$")$ should retum the string $"$

u yiven $>$ th wh$.$

Qparam str a string such as "secret"

Qretum a string with each character of str changed to a $*$;$,$

such as $n**x**k**n.$

$*)$

public static string hidecharacters $($String str$)$

$\{.$

Vi vour code goes here