From 1397c517ff25c046172f425e1fe5afdaac04dbd8 Mon Sep 17 00:00:00 2001
From: weaponsforge <forgeweapons@gmail.com>
Date: Thu, 26 Dec 2024 05:16:02 +0800
Subject: [PATCH 1/7] feat: day 9 disk fragmenter 1/2 soln, #14

---
 src/2024/2024-12-09/README.md      | 19 ++++++++++
 src/2024/2024-12-09/input.txt      |  1 +
 src/2024/2024-12-09/lib/compact.ts | 51 ++++++++++++++++++++++++++
 src/2024/2024-12-09/lib/disk.ts    | 58 ++++++++++++++++++++++++++++++
 src/2024/2024-12-09/main.ts        | 24 +++++++++++++
 src/2024/2024-12-09/sample.test.ts | 17 +++++++++
 6 files changed, 170 insertions(+)
 create mode 100644 src/2024/2024-12-09/README.md
 create mode 100644 src/2024/2024-12-09/input.txt
 create mode 100644 src/2024/2024-12-09/lib/compact.ts
 create mode 100644 src/2024/2024-12-09/lib/disk.ts
 create mode 100644 src/2024/2024-12-09/main.ts
 create mode 100644 src/2024/2024-12-09/sample.test.ts

diff --git a/src/2024/2024-12-09/README.md b/src/2024/2024-12-09/README.md
new file mode 100644
index 0000000..99a72e2
--- /dev/null
+++ b/src/2024/2024-12-09/README.md
@@ -0,0 +1,19 @@
+## Day 9: Disk Fragmenter
+
+Visit the Advent of Code website for more information on this puzzle at:
+
+**Source:** https://adventofcode.com/2024/day/8<br>
+**Status:** On-going ⭐
+
+## Code
+
+### `disk.ts`
+
+- **`Disk`** class - Object that provides common disk-like utility processing methods and stores processed data
+   - `createCharacterMap()` - Converts a disk map text into a character map
+   - `calculateDiskChecksum()` Calculates the check sum of a compacted disk files and spaces text map
+
+### `compact.ts`
+
+- **`CompactDisk`** class (extends the **`Disk`** class) - Object that compacts disk character symbols represeting file and space blocks from the right to the left-most free disk spaces
+   - `compactFileDisk()` - Moves file blocks one character at a time from the right to the left-most free disk spaces
diff --git a/src/2024/2024-12-09/input.txt b/src/2024/2024-12-09/input.txt
new file mode 100644
index 0000000..5ff5aae
--- /dev/null
+++ b/src/2024/2024-12-09/input.txt
@@ -0,0 +1 @@
+2333133121414131402
\ No newline at end of file
diff --git a/src/2024/2024-12-09/lib/compact.ts b/src/2024/2024-12-09/lib/compact.ts
new file mode 100644
index 0000000..982f5d4
--- /dev/null
+++ b/src/2024/2024-12-09/lib/compact.ts
@@ -0,0 +1,51 @@
+import { Disk } from './disk.js'
+
+/**
+ * @class CompactDisk
+ * @extends Disk
+ * @inheritdoc
+ * @description Object that compacts disk character symbols represeting file and space blocks from the right to the left-most free disk spaces
+ */
+export class CompactDisk extends Disk {
+  /**
+   * Creates an instance of the `CompactDisk` class
+   * @constructor
+   * @param {string} diskMapText Series of numbers representing an alternating file and disk space blocks
+   */
+  constructor(diskMapText: string) {
+    super(diskMapText)
+    this.compactFileDisk()
+  }
+
+  /**
+   * Moves file blocks one character at a time from the right to the left-most free disk spaces of a disk character map.
+   * @param {string[]} [charMap] (Optional) Character mapping conversion of a disk map. Processes the local `this.map[]` if parameter is not provided.
+   * @returns {string} Compacted disk character array
+   */
+  compactFileDisk (charMap?: string[]): string[] {
+    const map: string[] = [...(charMap ?? this.map)]
+    let charIndex = map.length - 1
+
+    // Total number of file (non-space) blocks
+    const filesCount = map.reduce(
+      (sum, item) => Number(item) >= 0
+        ? sum += 1
+        : sum,
+      0
+    )
+
+    while (charIndex >= filesCount) {
+      const dotIndex = map.indexOf('.')
+
+      if (dotIndex !== -1) {
+        map[dotIndex] = map[charIndex] ?? '.'
+        map[charIndex] = '.'
+      }
+
+      charIndex -= 1
+    }
+
+    this.compactMap = map
+    return map
+  }
+}
diff --git a/src/2024/2024-12-09/lib/disk.ts b/src/2024/2024-12-09/lib/disk.ts
new file mode 100644
index 0000000..db316df
--- /dev/null
+++ b/src/2024/2024-12-09/lib/disk.ts
@@ -0,0 +1,58 @@
+/**
+ * @class Disk
+ * @description Object that provides common disk-like utility processing methods and stores processed data
+ */
+export class Disk {
+  /** Character map conversion of a disk map string */
+  map: string[] = []
+
+  /** Compacted disk character array */
+  compactMap: string[] = []
+
+  /**
+   * Creates an instance of the `Disk` class
+   * @constructor
+   * @param {string} diskMapText Series of numbers representing an alternating file and disk space blocks
+   */
+  constructor(diskMapText: string) {
+    this.createCharacterMap(diskMapText)
+  }
+
+  /**
+   * Converts a disk map text into a character map, storing it in the `this.map[]` string array
+   * @param {string} diskMapText Series of numbers representing an alternating file and disk space blocks
+   * @returns {string[]} Character map conversion of a disk map string
+   */
+  createCharacterMap (diskMapText: string): string[] {
+    const characters: string[] = []
+
+    for (let i = 0; i < diskMapText.length; i += 1) {
+      if ((i + 1) % 2 === 0) {
+        characters.push(
+          ...Array(Number(diskMapText[i])).fill('.')
+        )
+      } else {
+        const itemID = i / 2
+        characters.push(
+          ...Array(Number(diskMapText[i])).fill(itemID.toString())
+        )
+      }
+    }
+
+    this.map = characters
+    return characters
+  }
+
+  /**
+   * Calculates the check sum of a compacted disk files and spaces text map
+   * @param {string[]} [compactFileText] (Optional) Compacted disk map resulting from the `this.compactFileDisk()` function. Processes the local `this.compactMap[]` data if parameter is not provided.
+   * @returns {number} Check sum - sum of file block IDs multiplied with their positions
+   */
+  calculateDiskChecksum (compactFileText?: string[]): number {
+    return (compactFileText || this.compactMap)
+      .reduce((sum, item, index) => {
+        if (item === '.') return sum
+        return sum + Number(item) * index
+      }, 0)
+  }
+}
diff --git a/src/2024/2024-12-09/main.ts b/src/2024/2024-12-09/main.ts
new file mode 100644
index 0000000..d2c7869
--- /dev/null
+++ b/src/2024/2024-12-09/main.ts
@@ -0,0 +1,24 @@
+import path from 'path'
+
+import { AOC_OUTPUT_TYPE, readAOCInputFile } from '@/utils/aocInputFile.js'
+import { currentDirectory } from '@/utils/file.js'
+
+import { CompactDisk } from './lib/compact.js'
+
+const input = readAOCInputFile({
+  filePath: path.join(currentDirectory(import.meta.url), 'input.txt'),
+  type: AOC_OUTPUT_TYPE.STRING
+}) as string
+
+/**
+ * Part 1/2 of the 2024-12-09 quiz
+ * Counts the check sum of a compacted disk represented by strings of text
+ */
+export const quiz20241209_01 = () => {
+  const disk = new CompactDisk(input)
+  const sum = disk.calculateDiskChecksum()
+
+  console.log('Compacted disk checksum:', sum)
+}
+
+quiz20241209_01()
diff --git a/src/2024/2024-12-09/sample.test.ts b/src/2024/2024-12-09/sample.test.ts
new file mode 100644
index 0000000..2bc7406
--- /dev/null
+++ b/src/2024/2024-12-09/sample.test.ts
@@ -0,0 +1,17 @@
+import path from 'path'
+import { test, expect } from 'vitest'
+
+import { AOC_OUTPUT_TYPE, readAOCInputFile } from '@/utils/aocInputFile.js'
+import { currentDirectory } from '@/utils/file.js'
+
+import { CompactDisk } from './lib/compact.js'
+
+const input = readAOCInputFile({
+  filePath: path.join(currentDirectory(import.meta.url), 'input.txt'),
+  type: AOC_OUTPUT_TYPE.STRING
+}) as string
+
+test('Compacted disk checksum', () => {
+  const disk = new CompactDisk(input)
+  expect(disk.calculateDiskChecksum()).toBe(1928)
+})

From 18ae4b85500968317cef55e259c37020a6602212 Mon Sep 17 00:00:00 2001
From: weaponsforge <forgeweapons@gmail.com>
Date: Thu, 26 Dec 2024 05:18:40 +0800
Subject: [PATCH 2/7] chore: use random non-aoc provided input

---
 src/2024/2024-12-09/input.txt      | 2 +-
 src/2024/2024-12-09/sample.test.ts | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/2024/2024-12-09/input.txt b/src/2024/2024-12-09/input.txt
index 5ff5aae..ae6fb74 100644
--- a/src/2024/2024-12-09/input.txt
+++ b/src/2024/2024-12-09/input.txt
@@ -1 +1 @@
-2333133121414131402
\ No newline at end of file
+233313312141413
\ No newline at end of file
diff --git a/src/2024/2024-12-09/sample.test.ts b/src/2024/2024-12-09/sample.test.ts
index 2bc7406..accb865 100644
--- a/src/2024/2024-12-09/sample.test.ts
+++ b/src/2024/2024-12-09/sample.test.ts
@@ -13,5 +13,5 @@ const input = readAOCInputFile({
 
 test('Compacted disk checksum', () => {
   const disk = new CompactDisk(input)
-  expect(disk.calculateDiskChecksum()).toBe(1928)
+  expect(disk.calculateDiskChecksum()).toBe(967)
 })

From 2ac3e83814bf8c221dee7b44968c57469bf6a967 Mon Sep 17 00:00:00 2001
From: weaponsforge <forgeweapons@gmail.com>
Date: Thu, 26 Dec 2024 05:43:26 +0800
Subject: [PATCH 3/7] chore: print logs

---
 src/2024/2024-12-09/lib/compact.ts | 26 +++++++++++++++++++++-----
 src/2024/2024-12-09/lib/disk.ts    |  2 +-
 src/2024/2024-12-09/main.ts        |  2 +-
 3 files changed, 23 insertions(+), 7 deletions(-)

diff --git a/src/2024/2024-12-09/lib/compact.ts b/src/2024/2024-12-09/lib/compact.ts
index 982f5d4..dbc3e50 100644
--- a/src/2024/2024-12-09/lib/compact.ts
+++ b/src/2024/2024-12-09/lib/compact.ts
@@ -1,10 +1,15 @@
 import { Disk } from './disk.js'
 
+interface CompactParams {
+  charMap?: string[];
+  printLog? : boolean;
+}
+
 /**
  * @class CompactDisk
  * @extends Disk
  * @inheritdoc
- * @description Object that compacts disk character symbols represeting file and space blocks from the right to the left-most free disk spaces
+ * @description Object that compacts disk character symbols representing file and space blocks from the right to the left-most free disk spaces
  */
 export class CompactDisk extends Disk {
   /**
@@ -12,19 +17,21 @@ export class CompactDisk extends Disk {
    * @constructor
    * @param {string} diskMapText Series of numbers representing an alternating file and disk space blocks
    */
-  constructor(diskMapText: string) {
+  constructor(diskMapText: string, printLog: boolean = false) {
     super(diskMapText)
-    this.compactFileDisk()
+    this.compactFileDisk({ printLog })
   }
 
   /**
    * Moves file blocks one character at a time from the right to the left-most free disk spaces of a disk character map.
    * @param {string[]} [charMap] (Optional) Character mapping conversion of a disk map. Processes the local `this.map[]` if parameter is not provided.
+   * @param {boolean} printLog Flag to display the step-by-step file movement on screen. Defaults to `false`
    * @returns {string} Compacted disk character array
    */
-  compactFileDisk (charMap?: string[]): string[] {
-    const map: string[] = [...(charMap ?? this.map)]
+  compactFileDisk (params: CompactParams): string[] {
+    const map: string[] = [...(params?.charMap || this.map)]
     let charIndex = map.length - 1
+    let logs = ''
 
     // Total number of file (non-space) blocks
     const filesCount = map.reduce(
@@ -37,6 +44,10 @@ export class CompactDisk extends Disk {
     while (charIndex >= filesCount) {
       const dotIndex = map.indexOf('.')
 
+      if (params?.printLog) {
+        logs += map.join('') + '\n'
+      }
+
       if (dotIndex !== -1) {
         map[dotIndex] = map[charIndex] ?? '.'
         map[charIndex] = '.'
@@ -45,6 +56,11 @@ export class CompactDisk extends Disk {
       charIndex -= 1
     }
 
+    if (params?.printLog) {
+      logs += map.join('')
+      console.log(logs)
+    }
+
     this.compactMap = map
     return map
   }
diff --git a/src/2024/2024-12-09/lib/disk.ts b/src/2024/2024-12-09/lib/disk.ts
index db316df..c7a78d8 100644
--- a/src/2024/2024-12-09/lib/disk.ts
+++ b/src/2024/2024-12-09/lib/disk.ts
@@ -44,7 +44,7 @@ export class Disk {
   }
 
   /**
-   * Calculates the check sum of a compacted disk files and spaces text map
+   * Calculates and returns the check sum of a compacted disk files and spaces text map
    * @param {string[]} [compactFileText] (Optional) Compacted disk map resulting from the `this.compactFileDisk()` function. Processes the local `this.compactMap[]` data if parameter is not provided.
    * @returns {number} Check sum - sum of file block IDs multiplied with their positions
    */
diff --git a/src/2024/2024-12-09/main.ts b/src/2024/2024-12-09/main.ts
index d2c7869..6360abd 100644
--- a/src/2024/2024-12-09/main.ts
+++ b/src/2024/2024-12-09/main.ts
@@ -15,7 +15,7 @@ const input = readAOCInputFile({
  * Counts the check sum of a compacted disk represented by strings of text
  */
 export const quiz20241209_01 = () => {
-  const disk = new CompactDisk(input)
+  const disk = new CompactDisk(input, true)
   const sum = disk.calculateDiskChecksum()
 
   console.log('Compacted disk checksum:', sum)

From 1f816851d161011b53ea6a2898c59210b76b2076 Mon Sep 17 00:00:00 2001
From: weaponsforge <forgeweapons@gmail.com>
Date: Fri, 27 Dec 2024 01:40:49 +0800
Subject: [PATCH 4/7] feat: day 9 disk fragmenter 2/2 soln,  #14

---
 README.md                          |   1 +
 src/2024/2024-12-09/README.md      |  25 +++--
 src/2024/2024-12-09/lib/compact.ts |  25 +++--
 src/2024/2024-12-09/lib/disk.ts    |  53 ++++++++---
 src/2024/2024-12-09/lib/types.ts   |  33 +++++++
 src/2024/2024-12-09/lib/whole.ts   | 143 +++++++++++++++++++++++++++++
 src/2024/2024-12-09/main.ts        |   9 ++
 src/2024/2024-12-09/sample.test.ts |   8 +-
 8 files changed, 264 insertions(+), 33 deletions(-)
 create mode 100644 src/2024/2024-12-09/lib/types.ts
 create mode 100644 src/2024/2024-12-09/lib/whole.ts

diff --git a/README.md b/README.md
index 18ce939..1b4f4da 100644
--- a/README.md
+++ b/README.md
@@ -17,6 +17,7 @@ The codes are structured in a way that discusses and walks through the solution
 - Day 6: Guard Gallivant [[link]](/src/2024/2024-12-06/README.md)
 - Day 7: Bridge Repair [[link]](/src/2024/2024-12-07/README.md)
 - Day 8: Resonant Collinearity [[link]](/src/2024/2024-12-08/README.md)
+- Day 9: Disk Fragmenter [[link]](/src/2024/2024-12-09/README.md)
 
 </details>
 
diff --git a/src/2024/2024-12-09/README.md b/src/2024/2024-12-09/README.md
index 99a72e2..921eaf9 100644
--- a/src/2024/2024-12-09/README.md
+++ b/src/2024/2024-12-09/README.md
@@ -3,17 +3,30 @@
 Visit the Advent of Code website for more information on this puzzle at:
 
 **Source:** https://adventofcode.com/2024/day/8<br>
-**Status:** On-going ⭐
+**Status:** Complete ⭐⭐
 
 ## Code
 
 ### `disk.ts`
 
-- **`Disk`** class - Object that provides common disk-like utility processing methods and stores processed data
-   - `createCharacterMap()` - Converts a disk map text into a character map
-   - `calculateDiskChecksum()` Calculates the check sum of a compacted disk files and spaces text map
+**`Disk`** class - Object that provides common disk-like utility processing methods and stores processed data with the following methods:
+
+- **`createCharacterMap()`** - Converts a disk map text into a character map, storing it in the `this.map[]` string array
+- **`calculateDiskChecksum()`** Calculates the check sum of a fragmented disk files and spaces text map
+- **`getGrid()`** - Joins the `this.map[]` disk and spaces character array into a string format if its less than `this.maxArrayToPrintLength`
+- **`getCompactGrid()`** - Joins the `this.compactMap[]` "compact" disk and spaces character array into a string format if its less than `this.maxArrayToPrintLength`
+
 
 ### `compact.ts`
 
-- **`CompactDisk`** class (extends the **`Disk`** class) - Object that compacts disk character symbols represeting file and space blocks from the right to the left-most free disk spaces
-   - `compactFileDisk()` - Moves file blocks one character at a time from the right to the left-most free disk spaces
+**`CompactDisk`** class (extends the **`Disk`** class) - Object that compacts disk character symbols representing file and space blocks from the right to the left-most free disk spaces with the following methods:
+
+- **`defragmentation()`** - Moves file blocks one character at a time from the right to the left-most free disk spaces of a disk character map, Storing the result in the `this.compactMap[]` and returning the result.
+
+### `whole.ts`
+
+**WholeDisk** class - Object that compacts disk character symbols representing files and spaces by moving whole (groups) of file blocks into spaces that can accommodate them with the following methods:
+
+- **`findDiskBlocks()`** - Finds and intializes the array indices of file blocks and spaces, noting their lengths
+- **`findFreeSpaceBlock()`** - Finds the index of a group of free space blocks that can contain the whole length of a `FileBlock` in the `this.map[]` array from the `this.spaceBlock` map
+- **`defragmentation()`** - Moves whole file blocks from the right to the left-most free disk spaces that can contain the whole files blocks, Storing the result in the `this.compactMap[]` and returning the result.
diff --git a/src/2024/2024-12-09/lib/compact.ts b/src/2024/2024-12-09/lib/compact.ts
index dbc3e50..0550af2 100644
--- a/src/2024/2024-12-09/lib/compact.ts
+++ b/src/2024/2024-12-09/lib/compact.ts
@@ -1,9 +1,5 @@
 import { Disk } from './disk.js'
-
-interface CompactParams {
-  charMap?: string[];
-  printLog? : boolean;
-}
+import type { CompactParams } from './types.js'
 
 /**
  * @class CompactDisk
@@ -16,20 +12,22 @@ export class CompactDisk extends Disk {
    * Creates an instance of the `CompactDisk` class
    * @constructor
    * @param {string} diskMapText Series of numbers representing an alternating file and disk space blocks
+   * @param {boolean} printLog Flag to display the step-by-step file movement on screen. Defaults to `false`
    */
   constructor(diskMapText: string, printLog: boolean = false) {
     super(diskMapText)
-    this.compactFileDisk({ printLog })
+    this.defragmentation({ printLog })
   }
 
   /**
-   * Moves file blocks one character at a time from the right to the left-most free disk spaces of a disk character map.
-   * @param {string[]} [charMap] (Optional) Character mapping conversion of a disk map. Processes the local `this.map[]` if parameter is not provided.
-   * @param {boolean} printLog Flag to display the step-by-step file movement on screen. Defaults to `false`
-   * @returns {string} Compacted disk character array
+   * Moves file blocks one character at a time from the right to the left-most free disk spaces of a disk character map,
+   * Storing the result in the `this.compactMap[]` and returning the result.
+   * @param {CompactParams} params - Parameters for input map string array.
+   * @returns {string[]} Array of defragmented files and spaces blocks
    */
-  compactFileDisk (params: CompactParams): string[] {
+  defragmentation (params: CompactParams): string[] {
     const map: string[] = [...(params?.charMap || this.map)]
+
     let charIndex = map.length - 1
     let logs = ''
 
@@ -45,9 +43,10 @@ export class CompactDisk extends Disk {
       const dotIndex = map.indexOf('.')
 
       if (params?.printLog) {
-        logs += map.join('') + '\n'
+        logs += this.getGrid(map)
       }
 
+      // Swap file and space locations one unit at a time
       if (dotIndex !== -1) {
         map[dotIndex] = map[charIndex] ?? '.'
         map[charIndex] = '.'
@@ -57,7 +56,7 @@ export class CompactDisk extends Disk {
     }
 
     if (params?.printLog) {
-      logs += map.join('')
+      logs += this.getGrid(map)
       console.log(logs)
     }
 
diff --git a/src/2024/2024-12-09/lib/disk.ts b/src/2024/2024-12-09/lib/disk.ts
index c7a78d8..9e4bbb1 100644
--- a/src/2024/2024-12-09/lib/disk.ts
+++ b/src/2024/2024-12-09/lib/disk.ts
@@ -3,11 +3,14 @@
  * @description Object that provides common disk-like utility processing methods and stores processed data
  */
 export class Disk {
-  /** Character map conversion of a disk map string */
-  map: string[] = []
+  /** 1-dimensional character array conversion of a disk map string */
+  protected map: string[] = []
 
   /** Compacted disk character array */
-  compactMap: string[] = []
+  protected compactMap: string[] = []
+
+  /** Maximum number of array elements to allow printing as string in console.log() */
+  maxArrayToPrintLength: number = 10000
 
   /**
    * Creates an instance of the `Disk` class
@@ -21,31 +24,29 @@ export class Disk {
   /**
    * Converts a disk map text into a character map, storing it in the `this.map[]` string array
    * @param {string} diskMapText Series of numbers representing an alternating file and disk space blocks
-   * @returns {string[]} Character map conversion of a disk map string
+   * @returns {string[]} Character array conversion of a disk map string
    */
   createCharacterMap (diskMapText: string): string[] {
-    const characters: string[] = []
-
     for (let i = 0; i < diskMapText.length; i += 1) {
-      if ((i + 1) % 2 === 0) {
-        characters.push(
+      if (i % 2 === 1) {
+        this.map.push(
           ...Array(Number(diskMapText[i])).fill('.')
         )
       } else {
         const itemID = i / 2
-        characters.push(
+
+        this.map.push(
           ...Array(Number(diskMapText[i])).fill(itemID.toString())
         )
       }
     }
 
-    this.map = characters
-    return characters
+    return this.map
   }
 
   /**
-   * Calculates and returns the check sum of a compacted disk files and spaces text map
-   * @param {string[]} [compactFileText] (Optional) Compacted disk map resulting from the `this.compactFileDisk()` function. Processes the local `this.compactMap[]` data if parameter is not provided.
+   * Calculates the check sum of a fragmented disk files and spaces text map
+   * @param {string[]} [compactFileText] (Optional) Compacted disk map resulting from the `this.defragmentation()` function. Processes the local `this.compactMap[]` data if parameter is not provided.
    * @returns {number} Check sum - sum of file block IDs multiplied with their positions
    */
   calculateDiskChecksum (compactFileText?: string[]): number {
@@ -55,4 +56,30 @@ export class Disk {
         return sum + Number(item) * index
       }, 0)
   }
+
+  /**
+   * Joins the `this.map[]` disk and spaces character array into a string format if its less than `this.maxArrayToPrintLength`
+   * @param {string} [map] (Optional) Character string array similar to `this.map[]`. Uses the `this.map[]` array by default.
+   * @returns {string} linear string/text version of the `this.map[]` character array
+   */
+  getGrid (map?: string[]): string {
+    if (map?.length ?? this.map.length <= this.maxArrayToPrintLength) {
+      return (map ?? this.map).join('') + '\n'
+    }
+
+    return ''
+  }
+
+  /**
+   * Joins the `this.compactMap[]` "compact" disk and spaces character array into a string format if its less than `this.maxArrayToPrintLength`
+   * @param {string} [map] (Optional) Character string array similar to `this.map[]`. Uses the `this.compactMap[]` array by default.
+   * @returns {string} linear string/text version of the `this.compactMap[]` character array
+   */
+  getCompactGrid (map?: string[]): string {
+    if ((map?.length ?? this.compactMap.length) <= this.maxArrayToPrintLength) {
+      return (map ?? this.compactMap).join('') + '\n'
+    }
+
+    return ''
+  }
 }
diff --git a/src/2024/2024-12-09/lib/types.ts b/src/2024/2024-12-09/lib/types.ts
new file mode 100644
index 0000000..d393e11
--- /dev/null
+++ b/src/2024/2024-12-09/lib/types.ts
@@ -0,0 +1,33 @@
+/**
+ * Parameters for input map string array
+ * @interface CompactParams
+ * @param {string} [charMap] - (Optional) Character mapping conversion of a disk map. Processes the local `this.map[]` if parameter is not provided.
+ * @param {boolean} [printLog] - (Optional) Flag to display the step-by-step file block movement on screen.
+ */
+export interface CompactParams {
+  charMap?: string[];
+  printLog? : boolean;
+}
+
+/**
+ * Properties of a system file block
+ * @interface FileBlock
+ * @param {number} length - Length of a file block - number of units that it occupies in the `this.map[]` array
+ * @param {number} index - Starting array index of a file block in the `this.map[]` array
+ */
+export interface FileBlock {
+  length: number;
+  index: number;
+}
+
+/**
+ * Properties of a space (free space) block
+ * @interface SpaceBlock
+ * @param {number} occupied - Number of space block units occupied by a `FileBlock`. A `SpaceBlock` is full if its `occupied`
+ *    and `length` properties are equal
+ */
+export interface SpaceBlock extends FileBlock {
+  occupied: number;
+}
+
+
diff --git a/src/2024/2024-12-09/lib/whole.ts b/src/2024/2024-12-09/lib/whole.ts
new file mode 100644
index 0000000..69e7bd9
--- /dev/null
+++ b/src/2024/2024-12-09/lib/whole.ts
@@ -0,0 +1,143 @@
+import { Disk } from './disk.js'
+import type { CompactParams, FileBlock, SpaceBlock } from './types.js'
+
+/**
+ * @class WholeDisk
+ * @extends Disk
+ * @inheritdoc
+ * @description Object that compacts disk character symbols representing files and spaces by moving whole (groups) of file blocks into spaces that can accommodate them
+ */
+export class WholeDisk extends Disk {
+  /** Structure for tracking the indices, length and availability of `SpaceBlock` disk space blocks */
+  spaceBlocks = new Map<string, SpaceBlock>()
+
+  /** Structure for tracking the indices and lengths of `FileBlock` file blocks */
+  fileBlocks = new Map<string, FileBlock>()
+
+  /**
+   * Creates an instance of the `WholeDisk` class
+   * @constructor
+   * @param {string} diskMapText Series of numbers representing an alternating file and disk space files
+   */
+  constructor(diskMapText: string, printLog: boolean = false) {
+    super(diskMapText)
+    this.defragmentation({ printLog })
+  }
+
+  /**
+   * Finds and intializes the array indices of file blocks and spaces, noting their lengths
+   * @returns {void}
+   */
+  findDiskBlocks (): void {
+    let spaceCount = 0
+
+    this.map.forEach((digit, index) => {
+      if (digit !== '.') {
+        if (!this.fileBlocks.has(digit)) {
+          this.fileBlocks.set(digit, { length: 1, index })
+        } else {
+          this.fileBlocks.get(digit)!.length += 1
+        }
+
+        if (spaceCount > 0) {
+          this.spaceBlocks.set(String(index - spaceCount), {
+            length: spaceCount,
+            index: index - spaceCount,
+            occupied: 0
+          })
+
+          spaceCount = 0
+        }
+      } else {
+        spaceCount += 1
+      }
+    })
+  }
+
+  /**
+   * Finds the index of a group of free space blocks that can contain the whole length of a `FileBlock` in the `this.map[]` array from the `this.spaceBlock` map
+   * @param {number} fileBlockLength Length of a `FileBlock` - number of spaces it occupies in the `this.map[]` array
+   * @param {number} fileStartIndex Starting index of a `FileBlock` in the `this.map[]` array
+   * @returns {number} Start array index in the `this.map[]` of a valid free space that can contain the whole length of a file block
+   */
+  findFreeSpaceBlock (fileBlockLength: number, fileStartIndex: number): number {
+    let indexOfSpace = -1
+
+    for (const item of this.spaceBlocks.values()) {
+      if (
+        // Space units already occupied with file blocks plus expected file block length is less than or equal
+        // the spaces (length) it can accommodate
+        item.occupied + fileBlockLength <= item.length &&
+        // The max units (spaces) should be large enough to contain the file length
+        item.length >= fileBlockLength &&
+        // Space block's index (position in the this.map[]) array is lower than the file's starting index to avoid repitition
+        item.index < fileStartIndex
+      ) {
+        indexOfSpace = item.index
+        break
+      }
+    }
+
+    return indexOfSpace
+  }
+
+  /**
+   * Moves whole file blocks from the right to the left-most free disk spaces that can contain the whole files blocks,
+   * Storing the result in the `this.compactMap[]` and returning the result.
+   * @typedef {CompactParams} params - Parameters for input map string array.
+   * @returns {string[]} Array of defragmented files and spaces blocks
+   */
+  defragmentation (params: CompactParams): string[] {
+    const map: string[] = structuredClone(params.charMap ?? this.map)
+    let logs = ''
+
+    // Find the locations and stats of files and spaces
+    this.findDiskBlocks()
+
+    // Ascending order file IDs
+    const digitKeys = Array.from(this.fileBlocks.keys())
+
+    for (let i = digitKeys.length - 1; i >= 0; i -= 1) {
+      const key = digitKeys[i]
+
+      // Full file block
+      const file = this.fileBlocks.get(String(key))
+
+      if (file === undefined) continue
+
+      // Find the available free disk space location that can fit the full file block
+      const fileBlockLength = file.length
+      const spaceIndex = this.findFreeSpaceBlock(fileBlockLength, file.index)
+
+      const space = this.spaceBlocks.get(String(spaceIndex))
+      if (space === undefined) continue
+
+      const start = space.index + space.occupied
+      const end = start + fileBlockLength
+
+      // Move files to the free space
+      for (let j = start; j < end; j += 1) {
+        map[j] = String(key)
+        space.occupied += 1
+      }
+
+      // Remove file trace from the old location
+      for (
+        let k = file.index;
+        k < file.index + fileBlockLength;
+        k += 1
+      ) {
+        map[k] = '.'
+      }
+
+      logs += this.getCompactGrid(map)
+    }
+
+    if (params?.printLog) {
+      console.log(logs)
+    }
+
+    this.compactMap = map
+    return map
+  }
+}
diff --git a/src/2024/2024-12-09/main.ts b/src/2024/2024-12-09/main.ts
index 6360abd..7a048d3 100644
--- a/src/2024/2024-12-09/main.ts
+++ b/src/2024/2024-12-09/main.ts
@@ -4,6 +4,7 @@ import { AOC_OUTPUT_TYPE, readAOCInputFile } from '@/utils/aocInputFile.js'
 import { currentDirectory } from '@/utils/file.js'
 
 import { CompactDisk } from './lib/compact.js'
+import { WholeDisk } from './lib/whole.js'
 
 const input = readAOCInputFile({
   filePath: path.join(currentDirectory(import.meta.url), 'input.txt'),
@@ -21,4 +22,12 @@ export const quiz20241209_01 = () => {
   console.log('Compacted disk checksum:', sum)
 }
 
+export const quiz20241209_02 = () => {
+  const disk = new WholeDisk(input, true)
+  const sum = disk.calculateDiskChecksum()
+
+  console.log('Disk - whole file blocks checksum:', sum)
+}
+
 quiz20241209_01()
+quiz20241209_02()
diff --git a/src/2024/2024-12-09/sample.test.ts b/src/2024/2024-12-09/sample.test.ts
index accb865..ca1d259 100644
--- a/src/2024/2024-12-09/sample.test.ts
+++ b/src/2024/2024-12-09/sample.test.ts
@@ -5,13 +5,19 @@ import { AOC_OUTPUT_TYPE, readAOCInputFile } from '@/utils/aocInputFile.js'
 import { currentDirectory } from '@/utils/file.js'
 
 import { CompactDisk } from './lib/compact.js'
+import { WholeDisk } from './lib/whole.js'
 
 const input = readAOCInputFile({
   filePath: path.join(currentDirectory(import.meta.url), 'input.txt'),
   type: AOC_OUTPUT_TYPE.STRING
 }) as string
 
-test('Compacted disk checksum', () => {
+test('Defragmented disk checksum', () => {
   const disk = new CompactDisk(input)
   expect(disk.calculateDiskChecksum()).toBe(967)
 })
+
+test('Defragmented disk - (move whole file blocks) checksum', () => {
+  const disk = new WholeDisk(input)
+  expect(disk.calculateDiskChecksum()).toBe(1440)
+})

From 93abfc0a059d5540157791824fdeca0b6c92c39e Mon Sep 17 00:00:00 2001
From: weaponsforge <forgeweapons@gmail.com>
Date: Fri, 27 Dec 2024 02:09:58 +0800
Subject: [PATCH 5/7] chore: update docs

---
 src/2024/2024-12-09/README.md      | 18 +++++++++---------
 src/2024/2024-12-09/lib/compact.ts |  4 ++--
 src/2024/2024-12-09/lib/disk.ts    | 10 +++++-----
 src/2024/2024-12-09/lib/whole.ts   |  6 +++---
 4 files changed, 19 insertions(+), 19 deletions(-)

diff --git a/src/2024/2024-12-09/README.md b/src/2024/2024-12-09/README.md
index 921eaf9..52082a0 100644
--- a/src/2024/2024-12-09/README.md
+++ b/src/2024/2024-12-09/README.md
@@ -11,22 +11,22 @@ Visit the Advent of Code website for more information on this puzzle at:
 
 **`Disk`** class - Object that provides common disk-like utility processing methods and stores processed data with the following methods:
 
-- **`createCharacterMap()`** - Converts a disk map text into a character map, storing it in the `this.map[]` string array
-- **`calculateDiskChecksum()`** Calculates the check sum of a fragmented disk files and spaces text map
-- **`getGrid()`** - Joins the `this.map[]` disk and spaces character array into a string format if its less than `this.maxArrayToPrintLength`
-- **`getCompactGrid()`** - Joins the `this.compactMap[]` "compact" disk and spaces character array into a string format if its less than `this.maxArrayToPrintLength`
+- **`createCharacterMap()`** - Converts files and spaces disk text representation into a character map, storing it in the `this.map[]` string array
+- **`calculateDiskChecksum()`** - Calculates the checksum of fragmented or defragmented disk files and spaces text map
+- **`getGrid()`** - Joins the `this.map[]` disk and spaces character array into a string format if it is less than `this.maxArrayToPrintLength`
+- **`getCompactGrid()`** - Joins the `this.compactMap[]` "compact" disk and spaces character array into a string format if it is less than `this.maxArrayToPrintLength`
 
 
 ### `compact.ts`
 
 **`CompactDisk`** class (extends the **`Disk`** class) - Object that compacts disk character symbols representing file and space blocks from the right to the left-most free disk spaces with the following methods:
 
-- **`defragmentation()`** - Moves file blocks one character at a time from the right to the left-most free disk spaces of a disk character map, Storing the result in the `this.compactMap[]` and returning the result.
+- **`defragmentation()`** - Moves file blocks one character at a time from the right to the left-most free disk spaces of a disk character map, Storing the result in the `this.compactMap[]` and returning the result.
 
 ### `whole.ts`
 
-**WholeDisk** class - Object that compacts disk character symbols representing files and spaces by moving whole (groups) of file blocks into spaces that can accommodate them with the following methods:
+**WholeDisk** class -  Object that compacts disk character symbols representing files and spaces by moving whole (groups) of file blocks into spaces that can accommodate them with the following methods:
 
-- **`findDiskBlocks()`** - Finds and intializes the array indices of file blocks and spaces, noting their lengths
-- **`findFreeSpaceBlock()`** - Finds the index of a group of free space blocks that can contain the whole length of a `FileBlock` in the `this.map[]` array from the `this.spaceBlock` map
-- **`defragmentation()`** - Moves whole file blocks from the right to the left-most free disk spaces that can contain the whole files blocks, Storing the result in the `this.compactMap[]` and returning the result.
+- **`findDiskBlocks()`** - Finds and initializes the array indices of file blocks and spaces, noting their lengths for tracking
+- **`findFreeSpaceBlock()`** - Finds the starting index of a group of free space blocks that can contain the whole length of a `FileBlock` in the `this.map[]` array from the `this.spaceBlocks` block map
+- **`defragmentation()`** - Moves whole file blocks from the right to the left-most free disk spaces that can contain the whole file blocks, Storing the result in the this.compactMap[] and returning the result.
diff --git a/src/2024/2024-12-09/lib/compact.ts b/src/2024/2024-12-09/lib/compact.ts
index 0550af2..3e1f6ce 100644
--- a/src/2024/2024-12-09/lib/compact.ts
+++ b/src/2024/2024-12-09/lib/compact.ts
@@ -20,8 +20,8 @@ export class CompactDisk extends Disk {
   }
 
   /**
-   * Moves file blocks one character at a time from the right to the left-most free disk spaces of a disk character map,
-   * Storing the result in the `this.compactMap[]` and returning the result.
+   * Moves file blocks one character at a time from the right to the left-most free disk spaces of
+   * a disk character map, storing the result in the `this.compactMap[]` and returning the result.
    * @param {CompactParams} params - Parameters for input map string array.
    * @returns {string[]} Array of defragmented files and spaces blocks
    */
diff --git a/src/2024/2024-12-09/lib/disk.ts b/src/2024/2024-12-09/lib/disk.ts
index 9e4bbb1..a257a55 100644
--- a/src/2024/2024-12-09/lib/disk.ts
+++ b/src/2024/2024-12-09/lib/disk.ts
@@ -1,6 +1,6 @@
 /**
  * @class Disk
- * @description Object that provides common disk-like utility processing methods and stores processed data
+ * @description Object that provides common disk-like utility processing methods and stores processed data.
  */
 export class Disk {
   /** 1-dimensional character array conversion of a disk map string */
@@ -22,7 +22,7 @@ export class Disk {
   }
 
   /**
-   * Converts a disk map text into a character map, storing it in the `this.map[]` string array
+   * Converts files and spaces disk text representation into a character map, storing it in the `this.map[]` string array
    * @param {string} diskMapText Series of numbers representing an alternating file and disk space blocks
    * @returns {string[]} Character array conversion of a disk map string
    */
@@ -45,7 +45,7 @@ export class Disk {
   }
 
   /**
-   * Calculates the check sum of a fragmented disk files and spaces text map
+   * Calculates the checksum of fragmented or defragmented disk files and spaces text map
    * @param {string[]} [compactFileText] (Optional) Compacted disk map resulting from the `this.defragmentation()` function. Processes the local `this.compactMap[]` data if parameter is not provided.
    * @returns {number} Check sum - sum of file block IDs multiplied with their positions
    */
@@ -58,7 +58,7 @@ export class Disk {
   }
 
   /**
-   * Joins the `this.map[]` disk and spaces character array into a string format if its less than `this.maxArrayToPrintLength`
+   * Joins the `this.map[]` disk and spaces character array into a string format if it is less than `this.maxArrayToPrintLength`
    * @param {string} [map] (Optional) Character string array similar to `this.map[]`. Uses the `this.map[]` array by default.
    * @returns {string} linear string/text version of the `this.map[]` character array
    */
@@ -71,7 +71,7 @@ export class Disk {
   }
 
   /**
-   * Joins the `this.compactMap[]` "compact" disk and spaces character array into a string format if its less than `this.maxArrayToPrintLength`
+   * Joins the `this.compactMap[]` "compact" disk and spaces character array into a string format if it is less than `this.maxArrayToPrintLength`
    * @param {string} [map] (Optional) Character string array similar to `this.map[]`. Uses the `this.compactMap[]` array by default.
    * @returns {string} linear string/text version of the `this.compactMap[]` character array
    */
diff --git a/src/2024/2024-12-09/lib/whole.ts b/src/2024/2024-12-09/lib/whole.ts
index 69e7bd9..95bc617 100644
--- a/src/2024/2024-12-09/lib/whole.ts
+++ b/src/2024/2024-12-09/lib/whole.ts
@@ -5,7 +5,7 @@ import type { CompactParams, FileBlock, SpaceBlock } from './types.js'
  * @class WholeDisk
  * @extends Disk
  * @inheritdoc
- * @description Object that compacts disk character symbols representing files and spaces by moving whole (groups) of file blocks into spaces that can accommodate them
+ * @description  Object that compacts disk character symbols representing files and spaces by moving whole (groups) of file blocks into spaces that can accommodate them.
  */
 export class WholeDisk extends Disk {
   /** Structure for tracking the indices, length and availability of `SpaceBlock` disk space blocks */
@@ -25,7 +25,7 @@ export class WholeDisk extends Disk {
   }
 
   /**
-   * Finds and intializes the array indices of file blocks and spaces, noting their lengths
+   * Finds and initializes the array indices of file blocks and spaces, noting their lengths for tracking.
    * @returns {void}
    */
   findDiskBlocks (): void {
@@ -55,7 +55,7 @@ export class WholeDisk extends Disk {
   }
 
   /**
-   * Finds the index of a group of free space blocks that can contain the whole length of a `FileBlock` in the `this.map[]` array from the `this.spaceBlock` map
+   * Moves whole file blocks from the right to the left-most free disk spaces that can contain the whole file blocks, Storing the result in the `this.compactMap[]` and returning the result.
    * @param {number} fileBlockLength Length of a `FileBlock` - number of spaces it occupies in the `this.map[]` array
    * @param {number} fileStartIndex Starting index of a `FileBlock` in the `this.map[]` array
    * @returns {number} Start array index in the `this.map[]` of a valid free space that can contain the whole length of a file block

From ecfe773cbcf5101bde77d1af16f4c31ce5443774 Mon Sep 17 00:00:00 2001
From: weaponsforge <forgeweapons@gmail.com>
Date: Fri, 27 Dec 2024 02:13:03 +0800
Subject: [PATCH 6/7] fix: print logs

---
 src/2024/2024-12-09/input.txt   | 2 +-
 src/2024/2024-12-09/lib/disk.ts | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/2024/2024-12-09/input.txt b/src/2024/2024-12-09/input.txt
index ae6fb74..83722da 100644
--- a/src/2024/2024-12-09/input.txt
+++ b/src/2024/2024-12-09/input.txt
@@ -1 +1 @@
-233313312141413
\ No newline at end of file
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
\ No newline at end of file
diff --git a/src/2024/2024-12-09/lib/disk.ts b/src/2024/2024-12-09/lib/disk.ts
index a257a55..a7336bf 100644
--- a/src/2024/2024-12-09/lib/disk.ts
+++ b/src/2024/2024-12-09/lib/disk.ts
@@ -63,7 +63,7 @@ export class Disk {
    * @returns {string} linear string/text version of the `this.map[]` character array
    */
   getGrid (map?: string[]): string {
-    if (map?.length ?? this.map.length <= this.maxArrayToPrintLength) {
+    if ((map?.length ?? this.map.length) <= this.maxArrayToPrintLength) {
       return (map ?? this.map).join('') + '\n'
     }
 

From 25a1a9d679db4238b35abbdf2ef2a908718d788e Mon Sep 17 00:00:00 2001
From: weaponsforge <forgeweapons@gmail.com>
Date: Fri, 27 Dec 2024 02:16:44 +0800
Subject: [PATCH 7/7] chore: use a random non-aoc input

---
 src/2024/2024-12-09/input.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/2024/2024-12-09/input.txt b/src/2024/2024-12-09/input.txt
index 83722da..ae6fb74 100644
--- a/src/2024/2024-12-09/input.txt
+++ b/src/2024/2024-12-09/input.txt
@@ -1 +1 @@
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