[New Exercise]: High Scores

config.json

@@ -403,6 +403,14 @@
         "prerequisites": [],
         "difficulty": 2
       },
+      {
+        "slug": "high-scores",
+        "name": "High Scores",
+        "uuid": "c21d45bc-2217-40cc-86ee-24e6938cfeca",
+        "practices": [],
+        "prerequisites": [],
+        "difficulty": 2
+      },
       {
         "slug": "matrix",
         "name": "Matrix",

exercises/practice/high-scores/.docs/instructions.md

@@ -0,0 +1,6 @@
+# Instructions
+
+Manage a game player's High Score list.
+
+Your task is to build a high-score component of the classic Frogger game, one of the highest selling and most addictive games of all time, and a classic of the arcade era.
+Your task is to write methods that return the highest score from the list, the last added score and the three highest scores.

exercises/practice/high-scores/.meta/HighScores.example.ps1

@@ -0,0 +1,37 @@
+<#
+.SYNOPSIS
+    Manage a game player's High Score list.
+
+.DESCRIPTION
+    Your task is to build a high-score component of the classic Frogger game, one of the highest selling and most addictive games of all time, and a classic of the arcade era.
+    Your task is to write methods that return the highest score from the list, the last added score and the three highest scores.
+
+.EXAMPLE
+    $roster = [HighScores]::new(@(30, 50, 40, 90, 80))
+    $roster.GetTopThree()
+    return : @(90, 80, 50)
+#>
+Class HighScores {
+    [int[]]$Scores
+
+    HighScores([int[]]$list){
+        $this.Scores = $list
+    }
+
+    [int[]] GetScores() {
+        return $this.Scores
+    }
+
+    [int] GetLatest() {
+        return $this.Scores[-1]
+    }
+
+    [int] GetPersonalBest() {
+        return ($this.Scores | Measure-Object -Maximum).Maximum
+    }
+
+    [int[]] GetTopThree() {
+        $SortedScores = $this.Scores | Sort-Object -Descending
+        return $SortedScores.Count -lt 3 ? $SortedScores : $SortedScores[0..2]
+    }
+}

exercises/practice/high-scores/.meta/config.json

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+{
+  "authors": ["glaxxie"],
+  "files": {
+    "solution": [
+      "HighScores.ps1"
+    ],
+    "test": [
+      "HighScores.tests.ps1"
+    ],
+    "example": [
+      ".meta/HighScores.example.ps1"
+    ]
+  },
+  "blurb": "Manage a player's High Score list.",
+  "source": "Tribute to the eighties' arcade game Frogger"
+}

exercises/practice/high-scores/.meta/tests.toml

@@ -0,0 +1,46 @@
+# This is an auto-generated file.
+#
+# Regenerating this file via `configlet sync` will:
+# - Recreate every `description` key/value pair
+# - Recreate every `reimplements` key/value pair, where they exist in problem-specifications
+# - Remove any `include = true` key/value pair (an omitted `include` key implies inclusion)
+# - Preserve any other key/value pair
+#
+# As user-added comments (using the # character) will be removed when this file
+# is regenerated, comments can be added via a `comment` key.
+
+[1035eb93-2208-4c22-bab8-fef06769a73c]
+description = "List of scores"
+
+[6aa5dbf5-78fa-4375-b22c-ffaa989732d2]
+description = "Latest score"
+
+[b661a2e1-aebf-4f50-9139-0fb817dd12c6]
+description = "Personal best"
+
+[3d996a97-c81c-4642-9afc-80b80dc14015]
+description = "Top 3 scores -> Personal top three from a list of scores"
+
+[1084ecb5-3eb4-46fe-a816-e40331a4e83a]
+description = "Top 3 scores -> Personal top highest to lowest"
+
+[e6465b6b-5a11-4936-bfe3-35241c4f4f16]
+description = "Top 3 scores -> Personal top when there is a tie"
+
+[f73b02af-c8fd-41c9-91b9-c86eaa86bce2]
+description = "Top 3 scores -> Personal top when there are less than 3"
+
+[16608eae-f60f-4a88-800e-aabce5df2865]
+description = "Top 3 scores -> Personal top when there is only one"
+
+[2df075f9-fec9-4756-8f40-98c52a11504f]
+description = "Top 3 scores -> Latest score after personal top scores"
+
+[809c4058-7eb1-4206-b01e-79238b9b71bc]
+description = "Top 3 scores -> Scores after personal top scores"
+
+[ddb0efc0-9a86-4f82-bc30-21ae0bdc6418]
+description = "Top 3 scores -> Latest score after personal best"
+
+[6a0fd2d1-4cc4-46b9-a5bb-2fb667ca2364]
+description = "Top 3 scores -> Scores after personal best"

exercises/practice/high-scores/HighScores.ps1

@@ -0,0 +1,18 @@
+<#
+.SYNOPSIS
+    Manage a game player's High Score list.
+
+.DESCRIPTION
+    Your task is to build a high-score component of the classic Frogger game, one of the highest selling and most addictive games of all time, and a classic of the arcade era.
+    Your task is to write methods that return the highest score from the list, the last added score and the three highest scores.
+
+.EXAMPLE
+    $roster = [HighScores]::new(@(30, 50, 40, 90, 80))
+    $roster.GetTopThree()
+    return : @(90, 80, 50)
+#>
+Class HighScores {
+    HighScores([int[]]$list){
+        Throw "Please implement this class."
+    }
+}

exercises/practice/high-scores/HighScores.tests.ps1

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+BeforeAll {
+    . "./HighScores.ps1"
+}
+
+Describe "High Scores Test cases" {
+    It "List of scores" {
+        $scores = [HighScores]::New(@(30, 50, 90, 40, 20, 70))
+        $got    = $scores.GetScores()
+        $want   = @(30, 50, 90, 40, 20, 70)
+
+        $got | Should -BeExactly $want
+    }
+
+    It "Latest score" {
+        $scores = [HighScores]::New(@(20, 60, 80))
+        $got    = $scores.GetLatest()
+        $want   = 80
+
+        $got | Should -BeExactly $want
+    }
+
+    It "should return the personal best score" {
+        $scores = [HighScores]::New(@(50, 40, 10, 20, 90, 100))
+        $got    = $scores.GetPersonalBest()
+        $want   = 100
+
+        $got | Should -BeExactly $want
+    }
+
+    It "Personal top three from a list of scores" {
+        $scores = [HighScores]::New(@(10, 30, 90, 30, 100, 20, 10, 0, 30, 40, 40, 70, 70))
+        $got    = $scores.GetTopThree()
+        $want   = @(100, 90, 70)
+
+        $got | Should -BeExactly $want
+    }
+
+    It "Personal top highest to lowest" {
+        $scores = [HighScores]::New(@(20, 10, 30))
+        $got    = $scores.GetTopThree()
+        $want   = @(30, 20, 10)
+
+        $got | Should -BeExactly $want
+    }
+
+    It "Personal top when there is a tie" {
+        $scores = [HighScores]::New(@(20, 30, 40, 30))
+        $got    = $scores.GetTopThree()
+        $want   = @(40, 30, 30)
+
+        $got | Should -BeExactly $want
+    }
+
+    It "Personal top when there are less than 3" {
+        $scores = [HighScores]::New(@(50, 60))
+        $got    = $scores.GetTopThree()
+        $want   = @(60, 50)
+
+        $got | Should -BeExactly $want
+    }
+
+    It "Personal top when there is only one" {
+        $scores = [HighScores]::New(@(80))
+        $got    = $scores.GetTopThree()
+        $want   = @(80)
+
+        $got | Should -BeExactly $want
+    }
+
+    It "Latest score after personal top scores" {
+        $scores = [HighScores]::New(@(70, 50, 20, 30))
+        $scores.GetTopThree()
+        $got    = $scores.GetLatest()
+        $want   = @(30)
+
+        $got | Should -BeExactly $want
+    }
+
+    It "Scores after personal top scores" {
+        $scores = [HighScores]::New(@(70, 50, 20, 30))
+        $scores.GetTopThree()
+        $got    = $scores.GetScores()
+        $want   = @(70, 50, 20, 30)
+
+        $got | Should -BeExactly $want
+    }
+
+    It "Latest score after personal best" {
+        $scores = [HighScores]::New(@(40, 60, 20, 90, 70))
+        $scores.GetPersonalBest()
+        $got    = $scores.GetLatest()
+        $want   = 70
+
+        $got | Should -BeExactly $want
+    }
+
+    It "Scores after personal best" {
+        $scores = [HighScores]::New(@(50, 60, 100, 90, 70))
+        $scores.GetPersonalBest()
+        $got    = $scores.GetScores()
+        $want   = @(50, 60, 100, 90, 70)
+
+        $got | Should -BeExactly $want
+    }
+}