46 lines
1.2 KiB
TypeScript
46 lines
1.2 KiB
TypeScript
const fs = require('fs');
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const input = fs.readFileSync(__dirname + '/input.txt', 'utf8').split("\n");
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const towels: Array<string> = input[0].split(', ');
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const shortestTowel = Math.min(...towels.map((t: string) => t.length));
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const longestTowel = Math.max(...towels.map((t: string) => t.length));
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const designs = input.slice(2);
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let possible = 0;
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let permSum = 0;
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let patternMap: { [key: string]: number } = {};
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function canBeDone(pattern: string): number {
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if (Object.hasOwn(patternMap, pattern)) {
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return patternMap[pattern];
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}
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let perms = 0;
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towels.forEach((t) => {
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if (t === pattern) {
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patternMap[pattern] = 1;
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perms++;
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} else if (pattern.startsWith(t)) {
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const subPerms = canBeDone(pattern.substring(t.length));
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perms += subPerms;
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}
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});
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patternMap[pattern] = perms;
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return perms;
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}
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designs.forEach((d: string, i: number)=> {
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patternMap = {};
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console.log(Math.floor(i / designs.length * 100));
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const designPerms = canBeDone(d);
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if (designPerms) {
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possible++;
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permSum += designPerms;
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}
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});
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console.log(possible, permSum); |