两种冒泡排序方法调用的修改--一个方法同时实现两种排序

 class Program
    {
        /// <summary>
        /// 数组排序
        /// </summary>
        /// <param name="arr">数组</param>
        /// <param name="b">true为从小到大排列 false为从大到小排列</param>
        /// <returns>排序完的数组</returns>
        static int[] Method(int[] arr,bool b)//方法一，先去确定后边,从后往前排
        {//方法可以定义成无返回值，因为数组为引用类型，为传址，数组的参数值会发生变化
            for (int i = arr.Length - 1; i > 0; i--)
            {
                for (int j = 0; j < arr.Length - 1; j++)
                {
                    if (arr[j] > arr[j + 1] && b)//小到大的判断
                    {
                        int k = arr[j];
                        arr[j] = arr[j + 1];
                        arr[j + 1] = k;
                    }
                    if (arr[j] < arr[j + 1] && !b)//大到小的判断
                    {
                        int k = arr[j];
                        arr[j] = arr[j + 1];
                        arr[j + 1] = k;
                    }
                }
            }
            return arr;
        }
        
        /// <summary>
        /// 数组排序方法
        /// </summary>
        /// <param name="arr">数组</param>
        /// <param name="b">true为从小到大排列 false为从大到小排列</param>
        /// <returns>排序完的数组</returns>
        static int[] Method2(int[] arr,bool b)//方法二，先确定前边数据，从前往后排
        {
            for (int i = 0; i < arr.Length - 1;i ++)
            {
                for (int j = i ; j <= arr.Length - 1;j++)
                {
                    if (arr[i] > arr[j] && b)
                    {
                        int k = arr[i];
                        arr[i] = arr[j];
                        arr[j] = k;
                    }
                    if (arr[i] < arr[j] && !b)
                    {
                        int k = arr[i];
                        arr[i] = arr[j];
                        arr[j] = k;
                    }
                }
            }
            return arr;
        }
        static void Main(string[] args)
        {
            int[] arr = new int[18];
            for (int i = 0;i <= 17;i ++)
            {
                Random rd = new Random();
                Thread.Sleep(200);
                arr[i] = rd.Next(100);
            }
            foreach (int i in arr)
                Console.Write(i + " ");
            Console.Write("\n");
            //利用方法一输出结果
            Console.WriteLine ("方法一输出从小到大：");
            arr = Method(arr,true);
            foreach (int i in arr)
                Console.Write(i + " ");
            Console.WriteLine("\n方法一输出从大到小：");
            arr = Method(arr, false);
            foreach (int i in arr)
                Console.Write(i + " ");
            //利用方法二输出结果
            Console.WriteLine("\n方法二输出从小到大：");
            arr = Method2(arr,true);
            foreach (int i in arr)
                Console.Write(i + " ");
            Console.WriteLine("\n方法二输出从大到小：");
            arr = Method2(arr, false);
            foreach (int i in arr)
                Console.Write(i + " ");
            Console.ReadLine();
        }
    }

 

转载于:https://www.cnblogs.com/whytohow/p/4726429.html