Merge branch '2022-08'
commit
f973bcd9de
|
@ -5,3 +5,4 @@ sample
|
|||
input
|
||||
*.t
|
||||
*.pm
|
||||
*.ejs
|
||||
|
|
|
@ -0,0 +1,99 @@
|
|||
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|
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@ -0,0 +1,89 @@
|
|||
import * as R from "remeda";
|
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import { readFile } from "../05/part1.js";
|
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import Victor from "@a-robu/victor";
|
||||
|
||||
const V = (...args) => new Victor(...args);
|
||||
|
||||
const readInput = (...args) =>
|
||||
readFile(...args)
|
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.split("\n")
|
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.filter((x) => x)
|
||||
.map((l) => l.split("").map((x) => parseInt(x)));
|
||||
|
||||
export const outOfBound = (size) => (pos) => {
|
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if (Math.min(pos.x, pos.y) < 0) return true;
|
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if (Math.max(pos.x, pos.y) >= size) return true;
|
||||
return false;
|
||||
};
|
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|
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export function generateVisibilityGrid(forest) {
|
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const size = forest.length;
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const visibility = Array(size)
|
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.fill(null)
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.map(() => Array(size).fill(false));
|
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|
||||
// top
|
||||
const positions = R.range(size)(0).map((x) => ({
|
||||
height: -1,
|
||||
position: V(x, -1),
|
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inc: V(0, 1),
|
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}));
|
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|
||||
// bottom
|
||||
positions.push(
|
||||
...R.range(size)(0).map((x) => ({
|
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height: -1,
|
||||
position: V(x, size),
|
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inc: V(0, -1),
|
||||
}))
|
||||
);
|
||||
|
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positions.push(
|
||||
...R.range(size)(0).map((x) => ({
|
||||
height: -1,
|
||||
position: V(-1, x),
|
||||
inc: V(1, 0),
|
||||
}))
|
||||
);
|
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positions.push(
|
||||
...R.range(size)(0).map((x) => ({
|
||||
height: -1,
|
||||
position: V(size, x),
|
||||
inc: V(-1, 0),
|
||||
}))
|
||||
);
|
||||
|
||||
while (positions.length) {
|
||||
const pos = positions.shift();
|
||||
pos.position.add(pos.inc);
|
||||
|
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if (outOfBound(size)(pos.position)) continue;
|
||||
|
||||
if (forest[pos.position.x][pos.position.y] > pos.height) {
|
||||
visibility[pos.position.x][pos.position.y] = true;
|
||||
pos.height = forest[pos.position.x][pos.position.y];
|
||||
}
|
||||
|
||||
positions.push(pos);
|
||||
}
|
||||
|
||||
return visibility;
|
||||
}
|
||||
|
||||
export const puzzleInput = readInput(import.meta.url, "input");
|
||||
export const sample = readInput(import.meta.url, "sample");
|
||||
|
||||
export const passthru = (func) => (arg) => {
|
||||
func(arg);
|
||||
return arg;
|
||||
};
|
||||
|
||||
export const printMap = passthru((forest) =>
|
||||
forest.forEach((line) => console.log(line.join(" ")))
|
||||
);
|
||||
|
||||
export default R.createPipe(
|
||||
generateVisibilityGrid,
|
||||
R.flatten,
|
||||
R.countBy(R.identity)
|
||||
);
|
|
@ -0,0 +1,40 @@
|
|||
import * as R from "remeda";
|
||||
import Victor from "@a-robu/victor";
|
||||
|
||||
import { outOfBound } from "./part1";
|
||||
|
||||
const V = (...args) => new Victor(...args);
|
||||
|
||||
function visibility(forest, x, y, dx, dy) {
|
||||
const pos = V(x, y);
|
||||
const inc = V(dx, dy);
|
||||
|
||||
let vis = 0;
|
||||
|
||||
while (true) {
|
||||
pos.add(inc);
|
||||
if (outOfBound(forest.length)(pos)) return vis;
|
||||
|
||||
if (forest[x][y] <= forest[pos.x][pos.y]) return 1 + vis;
|
||||
vis++;
|
||||
}
|
||||
}
|
||||
|
||||
const visibilityAround = (forest) => (x, y) =>
|
||||
[
|
||||
[0, 1],
|
||||
[0, -1],
|
||||
[1, 0],
|
||||
[-1, 0],
|
||||
]
|
||||
.map((d) => visibility(forest, x, y, ...d))
|
||||
.reduce((a, b) => a * b);
|
||||
|
||||
export default R.createPipe(
|
||||
(forest) => {
|
||||
const va = visibilityAround(forest);
|
||||
return forest.map((l, x) => l.map((_, y) => va(x, y)));
|
||||
},
|
||||
R.flatten,
|
||||
R.maxBy(R.identity)
|
||||
);
|
|
@ -0,0 +1,40 @@
|
|||
## \--- Day 8: Treetop Tree House ---
|
||||
|
||||
The expedition comes across a peculiar patch of tall trees all planted carefully in a grid. The Elves explain that a previous expedition planted these trees as a reforestation effort. Now, they're curious if this would be a good location for a [tree house](https://en.wikipedia.org/wiki/Tree_house).
|
||||
|
||||
First, determine whether there is enough tree cover here to keep a tree house _hidden_. To do this, you need to count the number of trees that are _visible from outside the grid_ when looking directly along a row or column.
|
||||
|
||||
The Elves have already launched a [quadcopter](https://en.wikipedia.org/wiki/Quadcopter) to generate a map with the height of each tree (your puzzle input). For example:
|
||||
|
||||
```
|
||||
30373
|
||||
25512
|
||||
65332
|
||||
33549
|
||||
35390
|
||||
|
||||
```
|
||||
|
||||
Each tree is represented as a single digit whose value is its height, where `0` is the shortest and `9` is the tallest.
|
||||
|
||||
A tree is _visible_ if all of the other trees between it and an edge of the grid are _shorter_ than it. Only consider trees in the same row or column; that is, only look up, down, left, or right from any given tree.
|
||||
|
||||
All of the trees around the edge of the grid are _visible_ - since they are already on the edge, there are no trees to block the view. In this example, that only leaves the _interior nine trees_ to consider:
|
||||
|
||||
- The top-left `5` is _visible_ from the left and top. (It isn't visible from the right or bottom since other trees of height `5` are in the way.)
|
||||
- The top-middle `5` is _visible_ from the top and right.
|
||||
- The top-right `1` is not visible from any direction; for it to be visible, there would need to only be trees of height _0_ between it and an edge.
|
||||
- The left-middle `5` is _visible_, but only from the right.
|
||||
- The center `3` is not visible from any direction; for it to be visible, there would need to be only trees of at most height `2` between it and an edge.
|
||||
- The right-middle `3` is _visible_ from the right.
|
||||
- In the bottom row, the middle `5` is _visible_, but the `3` and `4` are not.
|
||||
|
||||
With 16 trees visible on the edge and another 5 visible in the interior, a total of `*21*` trees are visible in this arrangement.
|
||||
|
||||
Consider your map; _how many trees are visible from outside the grid?_
|
||||
|
||||
To begin, [get your puzzle input](8/input).
|
||||
|
||||
Answer:
|
||||
|
||||
You can also [Shareon [Twitter](https://twitter.com/intent/tweet?text=%22Treetop+Tree+House%22+%2D+Day+8+%2D+Advent+of+Code+2022&url=https%3A%2F%2Fadventofcode%2Ecom%2F2022%2Fday%2F8&related=ericwastl&hashtags=AdventOfCode) [Mastodon](<javascript:void(0);>)] this puzzle.
|
|
@ -0,0 +1,5 @@
|
|||
30373
|
||||
25512
|
||||
65332
|
||||
33549
|
||||
35390
|
|
@ -0,0 +1,25 @@
|
|||
import { test, expect, describe } from "vitest";
|
||||
|
||||
import { expectSolution } from "../01/main.js";
|
||||
import part1, { sample, puzzleInput } from "./part1.js";
|
||||
import part2 from "./part2.js";
|
||||
|
||||
describe("part 1", () => {
|
||||
test("sample", () => {
|
||||
expect(part1(sample)).toBe(21);
|
||||
});
|
||||
test("solution", () => {
|
||||
expectSolution(part1(puzzleInput)).toEqual(1703);
|
||||
});
|
||||
});
|
||||
|
||||
describe("part 2", () => {
|
||||
test("sample", () => {
|
||||
expect(part2(sample)).toBe(8);
|
||||
});
|
||||
test("solution", () => {
|
||||
const solution = part2(puzzleInput);
|
||||
expect(solution).toBeGreaterThan(160);
|
||||
expectSolution(solution).toEqual(496650);
|
||||
});
|
||||
});
|
|
@ -1 +0,0 @@
|
|||
import * as R from "remeda";
|
|
@ -1 +0,0 @@
|
|||
import * as R from "remeda";
|
|
@ -6,6 +6,8 @@ vars:
|
|||
YEAR: 2022
|
||||
DAY:
|
||||
sh: date '+%d' | perl -pe's/^0//'
|
||||
DAY_FORMATTED:
|
||||
sh: date '+%d'
|
||||
GREETING: Hello, World!
|
||||
|
||||
tasks:
|
||||
|
@ -25,6 +27,10 @@ tasks:
|
|||
cmds:
|
||||
- firefox https://adventofcode.com/{{.YEAR}}/day/{{.DAY}}
|
||||
|
||||
download:
|
||||
cmds:
|
||||
- aoc download -d {{.DAY}} -o -p 2022/{{.DAY_FORMATTED}}/puzzle.md -i 2022/{{.DAY_FORMATTED}}/input
|
||||
|
||||
default:
|
||||
cmds:
|
||||
- echo "{{.GREETING}}"
|
||||
|
|
|
@ -0,0 +1,15 @@
|
|||
---
|
||||
to: app/hello.js
|
||||
---
|
||||
const hello = ```
|
||||
Hello!
|
||||
This is your first hygen template.
|
||||
|
||||
Learn what it can do here:
|
||||
|
||||
https://github.com/jondot/hygen
|
||||
```
|
||||
|
||||
console.log(hello)
|
||||
|
||||
|
|
@ -0,0 +1,16 @@
|
|||
---
|
||||
to: 2022/<%= day %>/part1.js
|
||||
---
|
||||
import * as R from "remeda";
|
||||
|
||||
import { readFile } from "../05/part1.js";
|
||||
|
||||
const readInput = (...args) =>
|
||||
readFile(...args)
|
||||
.split("\n")
|
||||
.filter((x) => x);
|
||||
|
||||
export const puzzleInput = readInput(import.meta.url, "input");
|
||||
export const sample = readInput(import.meta.url, "sample");
|
||||
|
||||
export default = () => {};
|
|
@ -0,0 +1,7 @@
|
|||
---
|
||||
to: 2022/<%= day %>/part2.js
|
||||
---
|
||||
import * as R from "remeda";
|
||||
|
||||
|
||||
export default = () => {};
|
|
@ -0,0 +1,7 @@
|
|||
module.exports = [
|
||||
{
|
||||
type: 'input',
|
||||
name: 'day',
|
||||
message: "advent day?"
|
||||
}
|
||||
]
|
|
@ -1,17 +1,20 @@
|
|||
---
|
||||
to: 2022/<%= day %>/test.js
|
||||
---
|
||||
import { test, expect, describe } from "vitest";
|
||||
|
||||
import { expectSolution } from "../01/main.js";
|
||||
import { solutionPart1, puzzleInput } from "./part1.js";
|
||||
import { solutionPart2 } from "./part2.js";
|
||||
import part1, { sample, puzzleInput } from "./part1.js";
|
||||
import part2 from "./part2.js";
|
||||
|
||||
describe("part 1", () => {
|
||||
test.todo("solution", () => {
|
||||
expectSolution(solutionPart1(puzzleInput)).toEqual("TODO");
|
||||
expectSolution(part1(puzzleInput)).toEqual("TODO");
|
||||
});
|
||||
});
|
||||
|
||||
describe("part 2", () => {
|
||||
test.todo("solution", () => {
|
||||
expectSolution(solutionPart2(puzzleInput)).toEqual("TODO");
|
||||
expectSolution(part2(puzzleInput)).toEqual("TODO");
|
||||
});
|
||||
});
|
|
@ -0,0 +1,5 @@
|
|||
---
|
||||
message: |
|
||||
hygen {bold generator new} --name [NAME] --action [ACTION]
|
||||
hygen {bold generator with-prompt} --name [NAME] --action [ACTION]
|
||||
---
|
|
@ -0,0 +1,18 @@
|
|||
---
|
||||
to: _templates/<%= name %>/<%= action || 'new' %>/hello.ejs.t
|
||||
---
|
||||
---
|
||||
to: app/hello.js
|
||||
---
|
||||
const hello = ```
|
||||
Hello!
|
||||
This is your first hygen template.
|
||||
|
||||
Learn what it can do here:
|
||||
|
||||
https://github.com/jondot/hygen
|
||||
```
|
||||
|
||||
console.log(hello)
|
||||
|
||||
|
|
@ -0,0 +1,18 @@
|
|||
---
|
||||
to: _templates/<%= name %>/<%= action || 'new' %>/hello.ejs.t
|
||||
---
|
||||
---
|
||||
to: app/hello.js
|
||||
---
|
||||
const hello = ```
|
||||
Hello!
|
||||
This is your first prompt based hygen template.
|
||||
|
||||
Learn what it can do here:
|
||||
|
||||
https://github.com/jondot/hygen
|
||||
```
|
||||
|
||||
console.log(hello)
|
||||
|
||||
|
|
@ -0,0 +1,14 @@
|
|||
---
|
||||
to: _templates/<%= name %>/<%= action || 'new' %>/prompt.js
|
||||
---
|
||||
|
||||
// see types of prompts:
|
||||
// https://github.com/enquirer/enquirer/tree/master/examples
|
||||
//
|
||||
module.exports = [
|
||||
{
|
||||
type: 'input',
|
||||
name: 'message',
|
||||
message: "What's your message?"
|
||||
}
|
||||
]
|
|
@ -0,0 +1,4 @@
|
|||
---
|
||||
setup: <%= name %>
|
||||
force: true # this is because mostly, people init into existing folders is safe
|
||||
---
|
|
@ -10,8 +10,10 @@
|
|||
"author": "Yanick Champoux <yanick@babyl.ca> (http://techblog.babyl.ca/)",
|
||||
"license": "ISC",
|
||||
"dependencies": {
|
||||
"@a-robu/victor": "^2.2.2",
|
||||
"debug": "^4.3.4",
|
||||
"fs-extra": "^11.1.0",
|
||||
"memoizerific": "^1.11.3",
|
||||
"prettier": "^2.8.0",
|
||||
"remeda": "^1.3.0",
|
||||
"vitest": "^0.25.3"
|
||||
|
|
Loading…
Reference in New Issue