stopwatch in this program

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2.33/5 (3 votes)

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here is a C# Program:
http://www.4shared.com/file/xAv2qAbB/SortComparison.html[^]
It has timer that shows sorting time at the end of sorting,but I need a stopwatch for this program that shows time from when sorting starts until its end
Does it need another thread?
if it is possible edit my code with that timer

Note:I need to show me time each moments like Stopwatch
I need timer shows time of sorting every millisecond

Posted 31-May-11 23:43pm

Member 7904482

Updated 1-Jun-11 16:36pm

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Wayne Gaylard · Answer 1 · 2011-06-01T02:09:00

If you want to return the elapsed time of the stopwatch you could do it like this

C#

public IList BubbleSort(IList arrayToSort, out long elapsedTime)
        { 
            Stopwatch stopWatch = new Stopwatch(); 
            stopWatch.Start(); 
            int n = arrayToSort.Count - 1; 
            for (int i = 0; i < n; i++) 
            { 
                for (int j = n; j > i; j--)
                { 
                    if (((IComparable)arrayToSort[j - 1]).CompareTo(arrayToSort[j]) > 0)
                    { 
                        object temp = arrayToSort[j - 1]; 
                        arrayToSort[j - 1] = arrayToSort[j];
                        arrayToSort[j] = temp;
                        RedrawItem(j);
                        RedrawItem(j - 1); 
                        RefreshPanel(pnlSamples); 
                    } 
                    Thread.Sleep(speed);
                } 
            }
            stopWatch.Stop();
            elapsedTime = stopWatch.ElapsedMilliseconds;
            return arrayToSort; 
        }

then you would call it something like this

C#

long methodTime;
            IList myList = BubbleSort(listToSort, out methodTime);

Hope this helps

lukeer · Answer 2 · 2011-06-01T00:00:00

Solution 1

Fine.
Even though it seems obvious, try this:

1. Instantiate a System.Diagnostics.Stopwatch in the smallest possible scope covering start and ending of sorting algorithm.
2. Start stopwatch on start of sort.
3. Stop stopwatch on sort finish.
4. get sorting time.

For more precise help, tell us where exactly a problem arises.

Tip: Some peope (including me) don't like downloading code from external sources, better post a relevant snippet enclosed by "pre" tags using the "improve question" button.

Posted 1-Jun-11 0:00am

lukeer

Comments

Member 7904482 1-Jun-11 6:07am

I write code like this:
public IList BubbleSort(IList arrayToSort)
{
Stopwatch stopWatch = new Stopwatch();
stopWatch.Start();
int n = arrayToSort.Count - 1;
for (int i = 0; i < n; i++)
{

for (int j = n; j > i; j--)
{
if (((IComparable)arrayToSort[j - 1]).CompareTo(arrayToSort[j]) > 0)
{
object temp = arrayToSort[j - 1];
arrayToSort[j - 1] = arrayToSort[j];
arrayToSort[j] = temp;
RedrawItem(j);
RedrawItem(j - 1);
RefreshPanel(pnlSamples);
}
Thread.Sleep(speed);
}
}
return arrayToSort;
stopWatch.Stop();
}
but how to show the time

Sergey Alexandrovich Kryukov 1-Jun-11 15:05pm

Why do you use Thread.Sleep?!! You time nothing in this case.
--SA

Member 7904482 1-Jun-11 6:11am

could you change my code and show this
thanks

yesotaso 1-Jun-11 6:55am

See Stopwatch Class there is example code there aswell.

Member 7904482 1-Jun-11 7:31am

I see it, but I think it show the time at the end of sorting. I said that I need timer show me time each moments like Stopwatch

yesotaso 1-Jun-11 8:05am

You can query Elapsed time Stopwatch is running, yes? What you need is decide when to look at it whether each pass of sort algorithm or in the end. Regardless, you need to (or have someone) code it. You can use a BackgroundWorker or a simple Timer.

Member 7904482 1-Jun-11 8:12am

could you Edit my code with a BackgroundWorker