function Map() {

var struct = function(key, value) {

this.key = key;

this.value = http://www.mamicode.com/value;

}

var put = function(key, value) {

for (var i = 0; i < this.arr.length; i++) {

if (this.arr[i].key === key) {

this.arr[i].value = http://www.mamicode.com/value;

return;

}

}

this.arr[this.arr.length] = new struct(key, value);

}

var get = function(key) {

for (var i = 0; i < this.arr.length; i++) {

if (this.arr[i].key === key) {

return this.arr[i].value;

}

}

return null;

}

var remove = function(key) {

var v;

for (var i = 0; i < this.arr.length; i++) {

v = this.arr.pop();

if (v.key === key) {

continue;

}

this.arr.unshift(v);

}

}

var size = function() {

return this.arr.length;

}

var isEmpty = function() {

return this.arr.length <= 0;

}

this.arr = new Array();

this.get = get;

this.put = put;

this.remove = remove;

this.size = size;

this.isEmpty = isEmpty;

}

JS构造map/dict结构