function List(arr) {
this.listSize = arr.length; //列表元素个数
this.pos = 0; //列表当前位置
this.dataStore = arr; //初始化一个空数组来保存列表元素
}
List.prototype = {
constructor: List,
append: function(element) {
this.dataStore[this.listSize++] = element;
},
find: function (element) {
for (var i = 0; i < this.dataStore.length; ++i) {
if (this.dataStore[i] == element) {
return i;
}
}
return -1;
},
remove: function (element) {
var foundAt = this.find(element);
if (foundAt > -1) {
this.dataStore.splice(foundAt, 1);
--this.listSize;
return true;
}
return false;
},
length: function() {
return this.listSize;
},
toString: function() {
return this.dataStore;
},
insert: function (element, after) {
var insertPos = this.find(after);
if (insertPos > -1) {
this.dataStore.splice(insertPos + 1, 0, element);
++this.listSize;
return true;
}
return false;
},
clear: function() {
delete this.dataStore;
this.dataStore = [];
this.listSize = this.pos = 0;
},
contains: function (element) {
for (var i = 0; i < this.dataStore.length; ++i) {
if (this.dataStore[i] == element) {
return true;
}
}
return false;
},
front: function() {
this.pos = 0;
},
end: function() {
this.pos = this.listSize-1;
},
prev: function() {
if (this.pos > 0) {
--this.pos;
} else {
console.log('已到达首页');
}
},
next: function() {
if (this.pos < this.listSize-1) {
++this.pos;
} else {
console.log('已到达末页');
}
},
currPos: function() {
return this.pos;
},
moveTo: function(position) {
this.pos = position;
},
getElement: function() {
return this.dataStore[this.pos];
},
displayObjList: function(Objtype) {
for (var pos = 0; pos < this.length(); pos++) {
if (this.dataStore[pos] instanceof Objtype) {
console.log(this.dataStore[pos]["name"] + ", " +
this.dataStore[pos]["movie"]);
} else {
continue;
}
}
},
showAllList: function() {
for (var pos = 0; pos < this.length(); pos++) {
console.log(this.dataStore[pos]);
}
}
}
//文件数据
var string = '(1)The Shawshank Redemption（ 《肖申克的救赎》 ）'
+ '(2)The Godfather（ 《教父》 ）'
+ '(3)The Godfather: Part II（ 《教父 2》 ）'
+ '(4)Pulp Fiction（ 《低俗小说》 ）'
+ '(5)The Good, the Bad and the Ugly（ 《黄金三镖客》 ）'
+ '(6)12 Angry Men（ 《十二怒汉》 ）'
+ '(7)Schindler’s List（ 《辛德勒名单》 ）'
+ '(8)The Dark Knight（ 《黑暗骑士》 ）'
+ '(9)The Lord of the Rings: The Return of the King（ 《指环王：王者归来》 ）'
+ '(10)Fight Club（ 《搏击俱乐部》 ）'
+ '(11)Star Wars: Episode V - The Empire Strikes Back（ 《星球大战 5：帝国反击战》 ）'
+ '(12)One Flew Over the Cuckoo’s Nest（ 《飞越疯人院》 ）'
+ '(13)The Lord of the Rings: The Fellowship of the Ring（ 《指环王：护戒使者》 ）'
+ '(14)Inception（ 《盗梦空间》 ）'
+ '(15)Goodfellas（ 《好家伙》 ）'
+ '(16)Star Wars（ 《星球大战》 ）'
+ '(17)Seven Samurai（ 《七武士》 ）'
+ '(18)The Matrix（ 《黑客帝国》 ）'
+ '(19)Forrest Gump（ 《阿甘正传》 ）'
+ '(20)City of God（ 《上帝之城》 )';
var movies = string.split(/(d+)/g).splice(1);
var moviesList = new List(movies); //保存电影
var customers = new List([]); //保存租赁电影的顾客
var rentedMovies = new List([]); //保存已租的电影
//顾客类
function Customer(name, movie) {
this.name = name;
this.movie = movie;
};
function checkOut(name, movie, customerList, rentedList) {
if (this.contains(movie)) {
var c = new Customer(name, movie);
customerList.append(c);
rentedList.append(movie);
this.remove(movie);
} else {
console.log(movie + " is not available.");
}
};
function checkIn(movie, customerList, rentedList) {
if (rentedList.contains(movie)) {
rentedList.remove(movie);
this.append(movie);
customerList.getBack(movie);
} else {
console.log(movie + " is not available.");
}
};
function getBack(movie) {
customers.dataStore.forEach(function(val, key) {
if (val.movie == movie) {
customers.dataStore.splice(key, 1);
customers.listSize = customers.dataStore.length;
return;
}
})
}
moviesList.checkOut = checkOut;
moviesList.checkIn = checkIn;
customers.getBack = getBack;
console.log("Available movies is under follow:
");
moviesList.showAllList();
var name = window.prompt('what is your name?');
var movie = window.prompt('which movies do your like to see?');
moviesList.checkOut(name, movie, customers, rentedMovies);
console.log("Now available movies is under follow:
");
moviesList.showAllList();