Nodejs String Hash hashCode()

Method Source Code

// Helpers no se para que sirve, pero parece que ordena de alguna manera los elementos del array
shuffle = function(o) {
    for ( var j, x, i = o.length; i; j = parseInt(Math.random() * i), x = o[--i], o[i] = o[j], o[j] = x)
        ;//from  w  w w  .  j  a  va2 s.  c om
    return o;
};

String.prototype.hashCode = function(){
    // See http://www.cse.yorku.ca/~oz/hash.html
    var hash = 5381;
    for (i = 0; i < this.length; i++) {
        char = this.charCodeAt(i);
        hash = ((hash << 5)+hash) + char;
        hash = hash & hash; // Convert to 32bit integer
    }
    return hash;
}
//obtener el modulo de los numeros
Number.prototype.mod = function(n) {
    return ((this%n)+n)%n;
}

Related

1. hashCode()

   String.prototype.hashCode = function() {
     var hash = 0, i, chr, len;
     if (this.length == 0) return hash;
     for (i = 0, len = this.length; i < len; i++) {
       chr   = this.charCodeAt(i);
       hash  = ((hash << 5) - hash) + chr;
       hash |= 0; 
     return hash;
   ...
   

2. hashCode()

   'use strict';
   String.prototype.hashCode = function() {
       var hash = 0, i, chr, len;
       if (this.length === 0){
           return hash;
       for (i = 0, len = this.length; i < len; i++) {
           chr   = this.charCodeAt(i);
           hash  = ((hash << 5) - hash) + chr;
   ...
   

3. hashCode()

   function guid() {
     function s4() {
       return Math.floor((1 + Math.random()) * 0x10000)
         .toString(16)
         .substring(1);
     return s4() + s4();
   function htmlEncode(s) {
   ...
   

4. hashCode()

   String.prototype.hashCode = function () {
       var hash = 0, i, chr, len;
       if (this.length === 0) return hash;
       for (i = 0, len = this.length; i < len; i++) {
           chr = this.charCodeAt(i);
           hash = ((hash << 5) - hash) + chr;
           hash |= 0; 
       return hash;
   ...
   

5. hashCode()

   String.prototype.hashCode = function(){
     var hash = 0;
       if (this.length == 0) return hash;
       for (var i = 0; i < this.length; i++) {
           char = this.charCodeAt(i);
           hash = ((hash<<5)-hash)+char;
           hash = hash & hash; 
       return hash;
   ...
   

6. hashCode()

   String.prototype.hashCode = function(){
       var hash = 0, i, chr, len;
       if (this.length === 0) return hash;
       for (i = 0, len = this.length; i < len; i++) {
           chr   = this.charCodeAt(i);
           hash  = ((hash << 5) - hash) + chr;
           hash |= 0; 
       return hash;
   ...
   

7. hashCode()

   'use strict';
   class HashTable {
       constructor() {
           this._elemets = [];
       add(key, value) {
           if (key == '' || value == '') return false;
           this._elemets[key.hashCode()] = value;
           return true;
   ...
   

8. hashCode()

   String.prototype.hashCode = function() {
     var hash = 0;
     if (this.length == 0) return hash;
     for (i = 0; i < this.length; i++) {
       char = this.charCodeAt(i);
       hash = ((hash<<5)-hash)+char;
       hash = hash & hash; 
     return hash;
   ...
   

9. hashCode()

   shuffle = function(o) {
       for ( var j, x, i = o.length; i; j = parseInt(Math.random() * i), x = o[--i], o[i] = o[j], o[j] = x)
           ;
       return o;
   };
   String.prototype.hashCode = function(){
       var hash = 5381;
       for (i = 0; i < this.length; i++) {
           char = this.charCodeAt(i);
   ...