You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
24 lines
586 B
JavaScript
24 lines
586 B
JavaScript
const { readInput, sum } = require("./util");
|
|
|
|
const { paragraphs } = readInput();
|
|
|
|
function intersect(strA, strB) {
|
|
const setB = new Set(strB);
|
|
return strA
|
|
.split("")
|
|
.filter((el) => setB.has(el))
|
|
.join("");
|
|
}
|
|
function intersections(...strings) {
|
|
let res = strings[0];
|
|
for (const cur of strings.slice(1)) {
|
|
res = intersect(res, cur);
|
|
}
|
|
return res;
|
|
}
|
|
|
|
console.log("Part1:");
|
|
console.log(sum(paragraphs.map((p) => new Set(p.replaceAll("\n", "")).size)));
|
|
console.log("Part2:");
|
|
console.log(sum(paragraphs.map((p) => intersections(...p.split("\n")).length)));
|