title: sdbm tags: math,intermediate
Hashes the input string into a whole number.
Use String.prototype.split('') and Array.prototype.reduce() to create a hash of the input string, utilizing bit shifting.
const sdbm = (str) => {
let arr = str.split("");
return arr.reduce(
(hashCode, currentVal) =>
(hashCode =
currentVal.charCodeAt(0) +
(hashCode << 6) +
(hashCode << 16) -
hashCode),
0
);
};sdbm("name"); // -3521204949