C#算法基础之冒泡排序

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

 namespace ConsolePractice
 {
     class CArray
     {
         private int[] arr;
         //数组大小
         private int upper;
         //下标
         private int numElements;

         /// <summary>
         /// 初始化数组参数
         /// </summary>
         /// <param name="size"></param>
         public CArray(int size)
         {
             arr = new int[size];
             upper = size - ;
             numElements = ;
         }

         /// <summary>
         /// 插入方法
         /// </summary>
         /// <param name="item">存储的数</param>
         public void Insert(int item)
         {
             arr[numElements] = item;
             numElements++;
         }

         /// <summary>
         /// 输出方法
         /// </summary>
         public void DisplayElements()
         {
             for (int i = ; i <= upper; i++)
             {
                 Console.Write(arr[i] + " ");
             }
             Console.WriteLine();
         }

         /// <summary>
         /// 清除数组
         /// </summary>
         public void Clear()
         {
             for (int i = ; i <= upper; i++)
             {
                 arr[i] = ;
             }
             numElements = ;
         }

         /// <summary>
         /// 冒泡排序算法
         /// </summary>
         public void BubbleSort()
         {
             int temp;
             for (int outer = upper; outer >= ; outer--)
             {
                 //每一轮最后的一个数值可以确定，所以每一轮都减少1次。按照outer判定。
                 for (int inner = ; inner <= outer - ; inner++)
                 {
                     if (arr[inner] > arr[inner + ])
                     {
                         temp = arr[inner];
                         arr[inner] = arr[inner + ];
                         arr[inner + ] = temp;
                     }
                 }
                 this.DisplayElements();
             }
         }
     }

     class C_shape
     {
         static void Main()
         {
             CArray nums = new CArray();
             Random rnd = new Random();
             for (int i = ; i < ; i++)
             {
                 nums.Insert(rnd.Next(,));
             }
             Console.WriteLine("Before sorting:");
             nums.DisplayElements();
             Console.WriteLine("During sorting:");
             nums.BubbleSort();
             Console.WriteLine("After sorting:");
             nums.DisplayElements();
             Console.ReadKey();
         }
     }
 }

运行结果：