Re$-$do Problem $3-7$ with a Choreographer

and $3$ helpers. You may choose the

starting positions of each robot.

Karel has taken a part time job as a

gardner. Karel's specialty is planting

beepers. Karel's current task is to plant

one and only one beeper on each corner

around the $"+"$ shaped wall arrangement

as shown in the situation in Figure $3-8.$

This task should use $28$ beepers in total.

Task.kt

import kareltherobot.$*$

import java.awt.Color

import kareltherobot.Directions.$*$

$//$ Create your new robot classes here

class Choreographer:UrRobot

$\{$

constructor$($st:Int, ave:Int, dir:Direction, beepers:Int$)$:super$($st$,$ ave, dir, beepers$)\{\}$

private var lisa:UrRobot $=$ UrRobot$($ street: $9,$ avenue: $6,$ South, beepers: $7,$ Color.PINK$)//1$st helper

$\}$

fun main$()\{$

initializeWorld$($ worldFile: "Problem$3-7.$kwld$")$

$//$ Create your robot objects here and tell them what to do$!$

var karel : Choreographer $=$ Choreographer$($ st: $2,$ ave: $5,$ North, beepers: $7)$

$\}$

$//$ You don't need to change anything below.

fun initializeWorld$($worldFile:String$="",$ delay:Int$=50)$

$\{$

if $(!$worldFile.isEmpty$())$

$\{$

if $("$windows$"$ in System.getProperty$("$

os$.$name"$).$lowercase$())\{$

World.readWorld$($ filename: "worldFiles$\backslash$l$"+$ worldFile$)$