如何创建一个循环，要求用户输入两个数字，一个是数组的长度，另一个是循环迭代的次数

Question

  public static void sortInterations()
    {
        Random r = new Random (); 
        Console.WriteLine ("Please enter the number of items in the array that will be sorted:");
        int numitems = Convert.ToInt32(Console.ReadLine()); 
        int[] arrayOfInts = new int[numitems];
        Console.WriteLine ("Please enter a number for iterations:");
        int iterations = Convert.ToInt32 (Console.ReadLine ());

        TimeSpan runningTime;

        for (int index = 0; index < iterations; index++) 
        {
            for (int count = 0; count < arrayOfInts.Length; count++) 
            {
                arrayOfInts [count] = r.Next (numitems);
            }
        }
        DateTime startTime = DateTime.Now;
        selectionSort (arrayOfInts);
        runningTime = DateTime.Now.Subtract(startTime);
        Console.WriteLine ("Time for ___ sort to complete: " + runningTime.ToString(@"mm\:ss\.ffffff"));
        sortInterations ();


   }

这就是我目前所拥有的！基本上我想用随机数填充数组，然后使用冒泡排序对它进行排序，用户输入变量迭代的次数，然后打印出花费的时间。

Answer 1

希望这对您有所帮助。您可能希望在创建新的随机整数数组的每次迭代中获得一个新种子，以避免获得相同或接近相同的数字。

public static void sortInterations()
{
  Random r = new Random();
  Console.WriteLine("Please enter the number of items in the array that will be sorted:");
  // no checking for invalid input i.e. "aA" will crash here when you try to convert 
  int numitems = Convert.ToInt32(Console.ReadLine());
  int[] arrayOfInts = new int[numitems];
  Console.WriteLine("Please enter a number for iterations:");
  // no checking for invalid input i.e. "aA" will crash here when you try to convert 
  int iterations = Convert.ToInt32(Console.ReadLine());

  // loop for each random array
  for (int index = 0; index < iterations; index++)
  {
    // loop to generate an array of random numbers      
    for (int count = 0; count < arrayOfInts.Length; count++)
    {
      arrayOfInts[count] = r.Next(numitems);
    }
    // a random array has been created start the clock and sort it
    Stopwatch elpased = new Stopwatch();
    elpased.Start();
    selectionSort(arrayOfInts);
    elpased.Stop();
    Console.WriteLine("Sort array Number: " + index + " Time for sort to complete in milliseconds: " + elpased.ElapsedMilliseconds.ToString());
  }
  Console.ReadLine();
}

如何创建一个循环，要求用户输入两个数字，一个是数组的长度，另一个是循环迭代的次数

How to create a loop that ask the user for two numbers, one will be for the length of the array, and the other for how many times the loop iterates

c#

arrays

monodevelop