mirror of
https://github.com/krahets/hello-algo.git
synced 2026-11-01 18:55:23 +08:00
Yudong Jin
2f561d3d51
* feat(ko): add the complete Korean online edition * Use UTF-8 for Python CI output on Windows * Remove print-book promotion from the Korean site * fix(ko): preserve emphasis before Korean particles
61 lines
1.2 KiB
JavaScript
61 lines
1.2 KiB
JavaScript
/**
|
|
* File: simple_hash.js
|
|
* Created Time: 2023-08-06
|
|
* Author: yuan0221 ([email protected])
|
|
*/
|
|
|
|
/* 덧셈 해시 */
|
|
function addHash(key) {
|
|
let hash = 0;
|
|
const MODULUS = 1000000007;
|
|
for (const c of key) {
|
|
hash = (hash + c.charCodeAt(0)) % MODULUS;
|
|
}
|
|
return hash;
|
|
}
|
|
|
|
/* 곱셈 해시 */
|
|
function mulHash(key) {
|
|
let hash = 0;
|
|
const MODULUS = 1000000007;
|
|
for (const c of key) {
|
|
hash = (31 * hash + c.charCodeAt(0)) % MODULUS;
|
|
}
|
|
return hash;
|
|
}
|
|
|
|
/* XOR 해시 */
|
|
function xorHash(key) {
|
|
let hash = 0;
|
|
const MODULUS = 1000000007;
|
|
for (const c of key) {
|
|
hash ^= c.charCodeAt(0);
|
|
}
|
|
return hash % MODULUS;
|
|
}
|
|
|
|
/* 회전 해시 */
|
|
function rotHash(key) {
|
|
let hash = 0;
|
|
const MODULUS = 1000000007;
|
|
for (const c of key) {
|
|
hash = ((hash << 4) ^ (hash >> 28) ^ c.charCodeAt(0)) % MODULUS;
|
|
}
|
|
return hash;
|
|
}
|
|
|
|
/* 실행 코드 */
|
|
const key = 'Hello 算法';
|
|
|
|
let hash = addHash(key);
|
|
console.log('덧셈 해시값: ' + hash);
|
|
|
|
hash = mulHash(key);
|
|
console.log('곱셈 해시값: ' + hash);
|
|
|
|
hash = xorHash(key);
|
|
console.log('XOR 해시값: ' + hash);
|
|
|
|
hash = rotHash(key);
|
|
console.log('회전 해시값: ' + hash);
|