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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

            
              /**
 * 电影
 */
class Movie {
  private movieBasicPrice = {
      regular: 2,
      new_release: 0,
      childrens: 2,
  };
  private basicDaysRented = {
      regular: 2,
      new_release: 0,
      childrens: 2,
  };
  private movieUnitPrice = {
      regular: 1.3,
      new_release: 3,
      childrens: 0.8,
  };
  // 电影积分
  private moviePoints = {
      regular: 1,
      new_release: 2,
      childrens: 1,
  };
  private title: string;
  private type: string;
  constructor(title: string, type: string) {
    this.title = title;
    this.type = type;
  }

  public getTitle() {
    return this.title;
  }
  public getCost(daysRented: number) {
    let remainedDaysRented = (daysRented - this.basicDaysRented[this.type]);
    remainedDaysRented = remainedDaysRented > 0 ? remainedDaysRented : 0;
    return this.movieBasicPrice[this.type] +
      this.movieUnitPrice[this.type] * remainedDaysRented;
  }
  public getPoints() {
    return this.moviePoints[this.type];
  }
}
/**
 * 租赁
 */
class Rental {
  /**
   * @param {string} movie 租赁的电影
   * @param {int} daysRented 租赁的时间
   */
  private movie: Movie;
  private daysRented;
  constructor(movie: Movie, daysRented: number) {
    this.movie = movie;
    this.daysRented = daysRented;
  }
  public getMovieTitle = () => {
    return this.movie.getTitle();
  }
  public getMovieCost = () => {
    return this.movie.getCost(this.daysRented);
  }
  public getMoviePoints = () => {
    return this.movie.getPoints();
  }
}
/**
 * 顾客
 */
class Customer {
  private name: string;
  private rentals: Rental[];
  constructor(name: string) {
    this.name = name; // 用户名字
    this.rentals = new Array(); // 用户所租赁的电影
  }
  public addRental(rental: Rental) {
    this.rentals.push(rental);
  }
  public statement() {
    let totalCost = 0; // 总金额
    let frequentRenterPoints = 0; // 用户积分
    let result = `${this.name}的租赁账单:\n`;
    // tslint:disable-next-line:prefer-for-of
    for (let i = 0; i < this.rentals.length; i++) {
      const rental = this.rentals[i];
      // 计算积分
      frequentRenterPoints += rental.getMoviePoints();
      // 展示result
      const movieCost = rental.getMovieCost();
      const movieTitle = rental.getMovieTitle();
      result += `${movieTitle} --- ${movieCost}\n`;
      // 计算总金额
      totalCost += movieCost;
    }
    result += `总金额为:${totalCost.toFixed(2)}\n`;
    result += `你本次出借获取的积分为:${frequentRenterPoints}`;
    return result;
  }
}
// 测试用例
function createMovie(title, type) {
  return new Movie(title, type);
}
let movie1 = createMovie('movie1', 'regular');
let movie2 = createMovie('movie2', 'new_release');
let movie3 = createMovie('movie3', 'childrens');
let rental1 = new Rental(movie1, 10);
let rental2 = new Rental(movie2, 5);
let rental3 = new Rental(movie3, 5);
let rental4 = new Rental(movie1, 1);
let rental5 = new Rental(movie1, 3);
let customer1 = new Customer('xiaobai');
customer1.addRental(rental1);
customer1.addRental(rental2);
customer1.addRental(rental3);
customer1.addRental(rental4);
customer1.addRental(rental5);
console.log(customer1.statement());

            
          
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