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ErikSchierboombobahop
ErikSchierboom
and
bobahop
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Add robot-simulator exercise (#265)
* Add robot-simulator exercise * Apply suggestions from code review Co-authored-by: Bob Hoeppner <[email protected]> * UPdate name * Simplify * Fix --------- Co-authored-by: Bob Hoeppner <[email protected]>
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‎config.json

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"difficulty": 7
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},
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{
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"slug": "robot-simulator",
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"name": "Robot Simulator",
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"uuid": "99edb730-c79a-48b6-9bba-efc4b4882f44",
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"practices": [
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"switch-statements",
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"switch-expressions",
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"constructors"
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],
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"prerequisites": [
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"enums",
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"classes",
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"constructors",
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"properties",
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"chars",
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"switch-statements"
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],
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"difficulty": 3
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},
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{
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"slug": "triangle",
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"name": "Triangle",
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"uuid": "78113af6-b1a4-40ab-86c6-3b26afdec75f",

‎exercises/Exercises.sln

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@@ -161,6 +161,8 @@ Project("{F184B08F-C81C-45F6-A57F-5ABD9991F28F}") = "DndCharacter", "practice\dn
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EndProject
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Project("{F184B08F-C81C-45F6-A57F-5ABD9991F28F}") = "Poker", "practice\poker\Poker.vbproj", "{F62F286B-2E13-4914-B168-EDB399470B1C}"
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EndProject
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Project("{F184B08F-C81C-45F6-A57F-5ABD9991F28F}") = "RobotSimulator", "practice\robot-simulator\RobotSimulator.vbproj", "{86A4A18F-6FC1-4953-9AAE-EEEE36FE8E2E}"
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EndProject
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Project("{F184B08F-C81C-45F6-A57F-5ABD9991F28F}") = "Triangle", "practice\triangle\Triangle.vbproj", "{1CE933B5-94BD-48AD-81B9-E352D75020CB}"
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EndProject
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Project("{F184B08F-C81C-45F6-A57F-5ABD9991F28F}") = "RobotName", "practice\robot-name\RobotName.vbproj", "{B6F54248-A909-42A1-9A75-679160C63B28}"
@@ -492,6 +494,10 @@ Global
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{F62F286B-2E13-4914-B168-EDB399470B1C}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{F62F286B-2E13-4914-B168-EDB399470B1C}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{F62F286B-2E13-4914-B168-EDB399470B1C}.Release|Any CPU.Build.0 = Release|Any CPU
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{86A4A18F-6FC1-4953-9AAE-EEEE36FE8E2E}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{86A4A18F-6FC1-4953-9AAE-EEEE36FE8E2E}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{86A4A18F-6FC1-4953-9AAE-EEEE36FE8E2E}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{86A4A18F-6FC1-4953-9AAE-EEEE36FE8E2E}.Release|Any CPU.Build.0 = Release|Any CPU
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{1CE933B5-94BD-48AD-81B9-E352D75020CB}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{1CE933B5-94BD-48AD-81B9-E352D75020CB}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{1CE933B5-94BD-48AD-81B9-E352D75020CB}.Release|Any CPU.ActiveCfg = Release|Any CPU
@@ -592,6 +598,7 @@ Global
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{057DDB74-6435-4B9E-988A-A21895AECE92} = {B161412A-37BB-42B7-9D8F-F4B238E3CFFA}
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{1C5BEE1E-B2B8-4D08-BC42-D83121DFFFB9} = {B161412A-37BB-42B7-9D8F-F4B238E3CFFA}
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{F62F286B-2E13-4914-B168-EDB399470B1C} = {B161412A-37BB-42B7-9D8F-F4B238E3CFFA}
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{86A4A18F-6FC1-4953-9AAE-EEEE36FE8E2E} = {B161412A-37BB-42B7-9D8F-F4B238E3CFFA}
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{1CE933B5-94BD-48AD-81B9-E352D75020CB} = {B161412A-37BB-42B7-9D8F-F4B238E3CFFA}
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{B6F54248-A909-42A1-9A75-679160C63B28} = {B161412A-37BB-42B7-9D8F-F4B238E3CFFA}
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{8CD79257-D9AF-4406-B93D-9C1AF256A6F4} = {B161412A-37BB-42B7-9D8F-F4B238E3CFFA}

‎exercises/practice/robot-simulator/.docs/instructions.md

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# Instructions
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Write a robot simulator.
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A robot factory's test facility needs a program to verify robot movements.
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The robots have three possible movements:
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- turn right
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- turn left
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- advance
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Robots are placed on a hypothetical infinite grid, facing a particular direction (north, east, south, or west) at a set of {x,y} coordinates,
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e.g., {3,8}, with coordinates increasing to the north and east.
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The robot then receives a number of instructions, at which point the testing facility verifies the robot's new position, and in which direction it is pointing.
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- The letter-string "RAALAL" means:
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- Turn right
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- Advance twice
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- Turn left
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- Advance once
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- Turn left yet again
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- Say a robot starts at {7, 3} facing north.
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Then running this stream of instructions should leave it at {9, 4} facing west.

‎exercises/practice/robot-simulator/.meta/Example.vb

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Imports System
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Public Enum DirectionType
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North
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East
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South
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West
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End Enum
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Public Class RobotSimulator
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Public Sub New(ByVal startDirection As DirectionType, ByVal startX As Integer, ByVal startY As Integer)
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Direction = startDirection
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X = startX
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Y = startY
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End Sub
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Public Property Direction As DirectionType
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Public Property X As Integer
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Public Property Y As Integer
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Public Sub Move(ByVal instructions As String)
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For Each instruction In instructions
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Move(instruction)
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Next
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End Sub
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Private Sub Move(ByVal code As Char)
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Select Case code
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Case "L"c
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TurnLeft()
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Case "R"c
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TurnRight()
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Case "A"c
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Advance()
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Case Else
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Throw New ArgumentOutOfRangeException(code)
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End Select
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End Sub
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Private Sub TurnLeft()
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Select Case Direction
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Case DirectionType.North
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Direction = DirectionType.West
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Case DirectionType.East
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Direction = DirectionType.North
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Case DirectionType.South
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Direction = DirectionType.East
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Case DirectionType.West
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Direction = DirectionType.South
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Case Else
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Throw New ArgumentOutOfRangeException()
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End Select
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End Sub
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Private Sub TurnRight()
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Select Case Direction
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Case DirectionType.North
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Direction = DirectionType.East
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Case DirectionType.East
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Direction = DirectionType.South
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Case DirectionType.South
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Direction = DirectionType.West
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Case DirectionType.West
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Direction = DirectionType.North
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Case Else
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Throw New ArgumentOutOfRangeException()
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End Select
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End Sub
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Private Sub Advance()
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Select Case Direction
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Case DirectionType.North
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Y += 1
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Case DirectionType.East
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X += 1
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Case DirectionType.South
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Y -= 1
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Case DirectionType.West
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X -= 1
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Case Else
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Throw New ArgumentOutOfRangeException()
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End Select
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End Sub
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End Class

‎exercises/practice/robot-simulator/.meta/config.json

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{
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"authors": [
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"ErikSchierboom",
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"bobahop"
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],
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"files": {
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"solution": [
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"RobotSimulator.vb"
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],
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"test": [
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"RobotSimulatorTests.vb"
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],
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"example": [
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".meta/Example.vb"
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]
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},
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"blurb": "Write a robot simulator.",
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"source": "Inspired by an interview question at a famous company."
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}

‎exercises/practice/robot-simulator/.meta/tests.toml

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# This is an auto-generated file.
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#
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# Regenerating this file via `configlet sync` will:
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# - Recreate every `description` key/value pair
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# - Recreate every `reimplements` key/value pair, where they exist in problem-specifications
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# - Remove any `include = true` key/value pair (an omitted `include` key implies inclusion)
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# - Preserve any other key/value pair
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#
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# As user-added comments (using the # character) will be removed when this file
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# is regenerated, comments can be added via a `comment` key.
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[c557c16d-26c1-4e06-827c-f6602cd0785c]
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description = "at origin facing north"
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[bf0dffce-f11c-4cdb-8a5e-2c89d8a5a67d]
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description = "at negative position facing south"
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[8cbd0086-6392-4680-b9b9-73cf491e67e5]
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description = "changes north to east"
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[8abc87fc-eab2-4276-93b7-9c009e866ba1]
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description = "changes east to south"
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[3cfe1b85-bbf2-4bae-b54d-d73e7e93617a]
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description = "changes south to west"
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[5ea9fb99-3f2c-47bd-86f7-46b7d8c3c716]
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description = "changes west to north"
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[fa0c40f5-6ba3-443d-a4b3-58cbd6cb8d63]
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description = "changes north to west"
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[da33d734-831f-445c-9907-d66d7d2a92e2]
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description = "changes west to south"
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[bd1ca4b9-4548-45f4-b32e-900fc7c19389]
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description = "changes south to east"
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[2de27b67-a25c-4b59-9883-bc03b1b55bba]
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description = "changes east to north"
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[f0dc2388-cddc-4f83-9bed-bcf46b8fc7b8]
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description = "facing north increments Y"
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[2786cf80-5bbf-44b0-9503-a89a9c5789da]
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description = "facing south decrements Y"
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[84bf3c8c-241f-434d-883d-69817dbd6a48]
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description = "facing east increments X"
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[bb69c4a7-3bbf-4f64-b415-666fa72d7b04]
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description = "facing west decrements X"
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[e34ac672-4ed4-4be3-a0b8-d9af259cbaa1]
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description = "moving east and north from README"
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[f30e4955-4b47-4aa3-8b39-ae98cfbd515b]
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description = "moving west and north"
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[3e466bf6-20ab-4d79-8b51-264165182fca]
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description = "moving west and south"
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[41f0bb96-c617-4e6b-acff-a4b279d44514]
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description = "moving east and north"

‎exercises/practice/robot-simulator/RobotSimulator.vb

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Imports System
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Public Enum DirectionType
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North
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East
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South
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West
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End Enum
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Public Class RobotSimulator
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Public Sub New(ByVal direction As DirectionType, ByVal x As Integer, ByVal y As Integer)
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End Sub
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Public ReadOnly Property Direction As DirectionType
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Get
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Throw New NotImplementedException("You need to implement this function.")
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End Get
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End Property
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Public ReadOnly Property X As Integer
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Get
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Throw New NotImplementedException("You need to implement this function.")
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End Get
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End Property
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Public ReadOnly Property Y As Integer
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Get
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Throw New NotImplementedException("You need to implement this function.")
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End Get
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End Property
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Public Sub Move(ByVal instructions As String)
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Throw New NotImplementedException("You need to implement this function.")
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End Sub
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End Class

‎exercises/practice/robot-simulator/RobotSimulator.vbproj

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<Project Sdk="Microsoft.NET.Sdk">
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<PropertyGroup>
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<TargetFramework>net7.0</TargetFramework>
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</PropertyGroup>
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<ItemGroup>
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<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.4.1" />
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<PackageReference Include="xunit" Version="2.4.2" />
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<PackageReference Include="xunit.runner.visualstudio" Version="2.4.5">
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<PrivateAssets>all</PrivateAssets>
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<IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
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</PackageReference>
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</ItemGroup>
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</Project>

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