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HashTable.js

function HashTable() {
    var size = 0;
    var entry = new Object();
    this.add = function (key, value) {
        if (!this.containsKey(key)) {
            size++;
        }
        entry[key] = value;
    }
    this.getValue = function (key) {
        return this.containsKey(key) ? entry[key] : null;
    }
    this.remove = function (key) {
        if (this.containsKey(key) && (delete entry[key])) {
            size--;
        }
    }
    this.containsKey = function (key) {
        return (key in entry);
    }
    this.containsValue = function (value) {
        for (var prop in entry) {
            if (entry[prop] == value) {
                return true;
            }
        }
        return false;
    }
    this.getValues = function () {
        var values = new Array();
        for (var prop in entry) {
            values.push(entry[prop]);
        }
        return values;
    }
    this.getKeys = function () {
        var keys = new Array();
        for (var prop in entry) {
            keys.push(prop);
        }
        return keys;
    }
    this.setData = function (data) {
        (typeof data == "object") ? entry = data : window.console && console.log("typeof data is not a object, it's a " + typeof data + ":" + data);
    }
    this.getData = function () {
        return entry;
    }
    this.getSize = function () {
        return size;
    }
    this.clear = function () {
        size = 0;
        entry = new Object();
    }
}