program.cs

C#2.0宝典源码,C#经典书籍,很多例子

using System;
using System.Collections.Generic;
using System.Text;

namespace Example15_3
{
    class Program
    {
        //定义一个委托
        delegate bool CompareOp(object lhs, object rhs);

        static void Main(string[] args)
        {
            //初始化一个学生数组
            Student[] students = 
                {
                    new Student("Zhang", 86),
                    new Student("Li", 75),
                    new Student("Wang", 93),
                    new Student("Zhao", 68),
                    new Student("Zhou", 76),
                    new Student("Ning", 98),
                    new Student("Mu", 46),
                    new Student("Liu", 53),
                    new Student("Jia", 100),
                    new Student("Pan", 83)
                };

            //使用RhsIsGreater方法进行比较，并用Sort方法排序
            CompareOp studentCompareOp = new CompareOp(Student.RhsIsGreater);
            ScoreSort.Sort(students,studentCompareOp);


            //循环输出所有学生的已排序成绩
            for (int i = 0; i < students.Length; i++)
            {
                Console.WriteLine(students[i].ToString());
            }

            Console.ReadLine();
        }

        /// <summary>
        /// 排序类，方法Sort为静态方法，使用冒泡法
        /// </summary>
        class ScoreSort
        {
            /// <summary>
            /// 冒泡法排序
            /// </summary>
            /// <param name="sortArray">要进行排序的数组</param>
            /// <param name="Method">排序的方法</param>
            static public void Sort(object[] sortArray, CompareOp Method)
            {
                //外围第一次循环
                for (int i = 0; i < sortArray.Length; i++)
                {
                    //第二次循环
                    for (int j = i + 1; j < sortArray.Length; j++)
                    {
                        //比较大小并交换
                        if (Method(sortArray[j], sortArray[i]))
                        {
                            object temp = sortArray[i];
                            sortArray[i] = sortArray[j];
                            sortArray[j] = temp;
                        }
                    }
                }
            }
        }
    }

    /// <summary>
    /// 学生类
    /// </summary>
    class Student
    {
        /// <summary>
        /// 姓名字段
        /// </summary>
        private string name;

        /// <summary>
        /// 成绩字段
        /// </summary>
        private decimal score;

        /// <summary>
        /// 构造函数
        /// </summary>
        /// <param name="name">姓名</param>
        /// <param name="score">成绩</param>
        public Student(string name, decimal score)
        {
            this.name = name;
            this.score = score;
        }

        /// <summary>
        /// 比较方法
        /// </summary>
        /// <param name="lhs">左侧学生对象</param>
        /// <param name="rhs">右侧学生对象</param>
        /// <returns>右侧学生对象的成绩高则返回true</returns>
        public static bool RhsIsGreater(object lhs, object rhs)
        { 
            Student studentL = (Student)lhs;
            Student studentR = (Student)rhs;
            return (studentR.score > studentL.score) ? true : false;
        }

        /// <summary>
        /// 重写ToString方法，可以使得输出更加清晰
        /// </summary>
        /// <returns>预定义格式的输出</returns>
        public override string ToString()
        {
            return string.Format(name + " : " + score);
        }
    }
}