blob: 33a8107c1c74c42488ec6f0fe54a066420e65d02 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
|
import { JSONSet, Vec2 } from "@/utils";
const isNumeric = (symbol: string) => symbol <= "9" && symbol >= "0";
export const main = async (lines: string[]): Promise<number | string> => {
const adjacentPoints: Vec2[] = [];
const dimy = lines.length;
for (let y = 0; y < lines.length; y++) {
const dimx = lines[y].length;
for (let x = 0; x < dimx; x++) {
const symbol = lines[y][x];
if (symbol != "." && !isNumeric(symbol)) {
for (let dy = -1; dy <= 1; dy++) {
for (let dx = -1; dx <= 1; dx++) {
const newX = dx + x;
const newY = dy + y;
if (
!(dy === dx && dy === 0) &&
newX >= 0 &&
newX < dimx &&
newY < dimy &&
newY >= 0
) {
adjacentPoints.push({ x: x + dx, y: y + dy });
}
}
}
}
}
}
let sum = 0;
const visitedPoints: JSONSet<Vec2> = new JSONSet();
for (const { x, y } of adjacentPoints) {
const symbol = lines[y][x];
if (!isNumeric(symbol)) continue;
let num = "";
if (!visitedPoints.has({ x, y })) {
let x_i = x;
while (x_i >= 0 && isNumeric(lines[y][x_i])) {
x_i--;
}
x_i = Math.max(0, x_i + 1);
while (x_i < lines[y].length && isNumeric(lines[y][x_i])) {
num += lines[y][x_i];
visitedPoints.add({ x: x_i, y });
x_i++;
}
}
if (num.trim() !== "") {
sum += parseInt(num.trim());
}
}
return sum;
};
//
const isrun = process.argv.length > 1 && process.argv[1] === import.meta.path;
if (isrun) {
const file = Bun.file("./problem.txt");
const text = await file.text();
const lines = text.split("\n").filter((x) => x && x.length);
console.log("=== COMPUTATION ===\n");
const answer = await main(lines);
console.log("\n=== /COMPUTATION ===\n");
console.log("=== ANSWER TO P1 ===");
console.log(answer);
}
|
