string字母排序,

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            string[] str =  { "student","iphone","abs","ball","wc"};
            SortStringArray(str,SortType.rise);

            for (int i = 0; i < str.Length; i++)
            {
                Console.WriteLine(str[i]);
            }

            Console.ReadKey();
        }



        //按字母排序
        static void SortStringArray(string [] array,SortType type) 
        {
            string temp = null;

            //降序
            if (type == SortType.drop)
            {
                for (int i = 0; i < array.Length; i++)
                {
                    for (int j = i; j < array.Length; j++)
                    {
                        if ((int)array[i][0] < (int)array[j][0])
                        {
                            temp = array[i];
                            array[i] = array[j];
                            array[j] = temp;
                        }
                    }
                }
            }//升序
            else if(type == SortType.rise)
            {
                for (int i = 0; i < array.Length; i++)
                {
                    for (int j = i; j < array.Length; j++)
                    {
                        if ((int)array[i][0] > (int)array[j][0])
                        {
                            temp = array[i];
                            array[i] = array[j];
                            array[j] = temp;
                        }
                    }
                }
            }



        }

        public enum SortType
        {
            drop,
            rise
        }

    }

}

冒泡算法对string数组排序O(∩_∩)O~

新人求关照，求大家多多指点