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[READ-ONLY] Mirror of https://github.com/emilyhunt/advent-of-code. My attempts at the Advent of Code coding challenges! aoc.emilydoesastro.com
advent-of-code-2021 advent-of-code-2022 advent-of-code-2022-javascript advent-of-code-2023 advent-of-code-2023-javascript
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623 B · 15 lines
JavaScript
at main
123456789101112131415export const cyrb53 = (str, seed = 0) => { // From https://stackoverflow.com/questions/7616461/generate-a-hash-from-string-in-javascript let h1 = 0xdeadbeef ^ seed, h2 = 0x41c6ce57 ^ seed; for (let i = 0, ch; i < str.length; i++) { ch = str.charCodeAt(i); h1 = Math.imul(h1 ^ ch, 2654435761); h2 = Math.imul(h2 ^ ch, 1597334677); } h1 = Math.imul(h1 ^ (h1 >>> 16), 2246822507) ^ Math.imul(h2 ^ (h2 >>> 13), 3266489909); h2 = Math.imul(h2 ^ (h2 >>> 16), 2246822507) ^ Math.imul(h1 ^ (h1 >>> 13), 3266489909); return 4294967296 * (2097151 & h2) + (h1 >>> 0); };