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Jonathan Crispe
NA
46
48.6k
random array and tick frequency
Nov 10 2011 1:05 PM
// array of integers to hold values
private int[] a = new int[100];
// number of elements in array
private int x;
// Selection Sort Algorithm
public void sortArray()
{
int i, j;
int min, temp;
for (i = 0; i < x - 1; i++)
{
min = i;
for (j = i + 1; j < x; j++)
{
if (a[j] < a[min])
{
min = j;
}
}
Random randomNumber = new Random();
a = new int[100];
for (int row = 0; row < 100; row++)
{
a[row] = randomNumber.Next(0, 99);
}
temp = a[i];
a[i] = a[min];
a[min] = temp;
}
}
public static void Main()
{
// Instantiate an instance of the class
selectionSort mySort = new selectionSort();
// Get the number of elements to store in the array
Console.Write("Number of elements in the array (less than 100) : ");
string s = Console.ReadLine();
mySort.x = Int32.Parse(s);
// Array header
Console.WriteLine("");
Console.WriteLine("-----------------------");
Console.WriteLine(" Enter array elements ");
Console.WriteLine("-----------------------");
// Get array elements
for (int i = 0; i < mySort.x; i++)
{
Console.Write("<{0}> ", i + 1);
string s1 = Console.ReadLine();
mySort.a[i] = Int32.Parse(s1);
}
// Sort the array
mySort.sortArray();
// Output sorted array
Console.WriteLine("");
Console.WriteLine("-----------------------");
Console.WriteLine(" Sorted array elements ");
Console.WriteLine("-----------------------");
for (int j = 0; j < mySort.x; j++)
{
Console.WriteLine(mySort.a[j]);
}
// Here to stop app from closing
Console.WriteLine("\n\nPress Return to exit.");
Console.Read();
}
}
how to get the current System tick count (System.DateTime.Now.Ticks) immediately before sorting the array and immediately after sorting. Record the difference in these values to determine how long the sort took (One tick is 100 nanoseconds).
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Command.Parameters.AddWithValue having two possible values
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