C#基础-034 创建一个图书类，并设计书名，作者，价格，页数，创建一个图书数组

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（1）写一个方法根据图书名，查询某本图书是否存在

 class Book    {        public string Name { get; set; }        public string Author { get; set; }        public float Price { get; set; }        public int PageCount { get; set; }        public Book()        {        }        public Book(string name, string author, float price, int pageCount)        {            Name = name;            Author = author;            Price = price;            PageCount = pageCount;        }        public static bool QuaryBookByBookName(string name,Book[] books)        {            for (int i = 0; i < books.Length; i++)            {                if (name==books[i].Name)                {                    return true;                }            }            return false;        }

main方法测试参考代码：

  static void Task03()        {            Book[] books = new Book[5];            books[0] = new Book("水浒传","施耐庵",56,560);            books[1] = new Book("C1#从入门到精通", "张三", 78, 1140);            books[2] = new Book("浅谈C#的优与劣", "李四", 98, 540);            books[3] = new Book("红楼梦", "曹雪芹", 42, 780);            books[4] = new Book("C2#从入门到放弃", "王五", 2, 120);            bool ret = Book.QuaryBookByBookName("C#从入门到精通",books);            Console.WriteLine(ret);            ret = Book.QuaryBookByBookName("C#", books);            Console.WriteLine(ret);            ret = Book.QuaryContainsName("C#",books);            Console.WriteLine(ret);        }

（2）写一个方法找出所有包含“C#”字样的图书

   public static bool QuaryContainsName(string name,Book[] books)        {            for (int i = 0; i < books.Length; i++)            {                //第一种方式                //if (books[i].Name.Contains(name))                //{                //    return true;                //}                //第二种方式                if (IsConctains(books[i].Name,name))                {                    return true;                }            }            return false;        }        //判断字符串targetStr中是否包含sourceStr，返回布尔值        static bool IsConctains(string targetStr,string sourceStr)        {            if (targetStr.Length<sourceStr.Length)            {                return false;            }            for (int i = 0; i < targetStr.Length-sourceStr.Length+1; i++)            {                for (int j = 0; j < sourceStr.Length; j++)                {                    if (sourceStr[j] != targetStr[i+j])                    {                        break;                    }                    if (j==sourceStr.Length-1)                    {                        return true;                    }                }            }            return false;        }    }

main方法测试参考代码：

  static void Task03()        {            Book[] books = new Book[5];            books[0] = new Book("水浒传","施耐庵",56,560);            books[1] = new Book("C1#从入门到精通", "张三", 78, 1140);            books[2] = new Book("浅谈C#的优与劣", "李四", 98, 540);            books[3] = new Book("红楼梦", "曹雪芹", 42, 780);            books[4] = new Book("C2#从入门到放弃", "王五", 2, 120);            bool ret = Book.QuaryContainsName("C#",books);            Console.WriteLine(ret);        }

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