feat: day 14 restroom redoubt 20241214

README.md

@@ -24,6 +24,7 @@ This repository contains solutions and a local development environment for the [
 - Day 11: Plutonian Pebbles [[link]](/src/2024/2024-12-11/README.md)
 - Day 12: Garden Groups [[link]](/src/2024/2024-12-12/README.md)
 - Day 13: Claw Contraption [[link]](/src/2024/2024-12-13/README.md)
+- Day 14: Restroom Redoubt [[link]](/src/2024/2024-12-14/README.md)
 
 </details>
 

src/2024/2024-12-10/lib/scoresRatings.ts

@@ -28,6 +28,8 @@ const findPaths = (pointVector: PointDirection, data: number[][], isRating: bool
       if (step === undefined) continue
       const pt = getCoordinateSymbol(step, data)
 
+      if (pt === undefined) continue
+
       if (pt.symbol === 9) {
         if (isRating) {
           // Rating: count all trails ending in 9's
@@ -76,6 +78,8 @@ export const countTrailScores = (data: number[][], params?: InputOptions): Trail
     }
 
     const pt = getCoordinateSymbol(starts[i] as Point, data)
+    if (!pt) continue
+
     activeZeroIndex = pt.coordinate
     scores[activeZeroIndex] = []
 

src/2024/2024-12-13/main.ts

@@ -6,7 +6,7 @@ const data = fileReader('../input.txt')
 const data2 = fileReader('../input2.txt')
 
 /**
- * Part 1/2 of the 2024-12-14 quiz
+ * Part 1/2 of the 2024-12-13 quiz
  * Counts the number of tokens needed to win all possible prizes.
  */
 const quiz20241213_01 = () => {
@@ -17,7 +17,7 @@ const quiz20241213_01 = () => {
 }
 
 /**
- * Part 2/2 of the 2024-12-14 quiz
+ * Part 2/2 of the 2024-12-13 quiz
  * Counts the number of tokens needed to win all possible prizes,
  * adjusted to the additional `10000000000000` of the prize coordinates
  */

src/2024/2024-12-14/README.md

@@ -0,0 +1,31 @@
+## Day 14: Restroom Redout
+
+Visit the Advent of Code website for more information on this puzzle at:
+
+**Source:** https://adventofcode.com/2024/day/14<br>
+**Status:** Complete ⭐⭐
+
+## Code
+
+### `findEasterEgg.ts`
+
+- **`findEasterEgg()`** - Counts the no. of seconds before robots display (form) the Christmas Tree easter egg.
+   > **NOTE:** I got tips and hints from about the figure of the Christmas tree [here](https://elixirforum.com/t/advent-of-code-2024-day-14/68091/3) after trying to observe for a 🎄 pattern in grid renders per second iteration.
+
+### `safetyFactor.ts`
+
+- **`calculateSafetyFactor()`** - Counts the safety factor after `params.seconds` of simulating moving the robots.
+
+### `board.ts`
+
+**Board** class
+
+- Manages the `Grid`-like 2D string array, methods, and properties in which robots run
+- **`create()`** - Creates a blank `this.length` x `this.width` board, clearing
+- **`findQuadrants()`** - Finds the four (4) main quadrants of `this.grid`, each containing a set of inclusive `start` and `end` coordinates.
+- **`getQuadrant()`** - Finds the quadrant `ID` of a `Point` within the `this.grid` 2D array.
+- **`moveRobot()`** - Moves a robot from a tile and updates the current and new tile's robot count
+- **`setRobot()`** - Sets a new robot into the `Board`'s robots list and marks its position in `this.grid[][]` array
+- **`setTileValue()`** - Sets the string value in the 2D `this.grid[][]` array
+- **`simulateRobotsWalk()`** - Move (walk) the robots by updating their positions by velocity by `seconds` times.
+- **`viewQuadrants()`** - Draws categorized symbols per quadrant on a temporary 2D array for visualization.