design-hashmap.js

// Problem on LeetCode: https://leetcode.com/problems/design-hashmap/

var MyHashMap = function () {
	this.map = [];
};

/**
 * @param {number} key
 * @param {number} value
 * @return {void}
 */
MyHashMap.prototype.put = function (key, value) {
	this.map[key] = value;
};

/**
 * @param {number} key
 * @return {number}
 */
MyHashMap.prototype.get = function (key) {
	if (this.map[key] === undefined) return -1;
	return this.map[key];
};

/**
 * @param {number} key
 * @return {void}
 */
MyHashMap.prototype.remove = function (key) {
	delete this.map[key];
};

/**
 * Your MyHashMap object will be instantiated and called as such:
 * var obj = new MyHashMap()
 * obj.put(key,value)
 * var param_2 = obj.get(key)
 * obj.remove(key)
 */