As the xSortLab applet performs a sort, it will tell you how may comparison and copy operations it has done so far. Don't be afraid to sort , or even , arrays of size 5. Use your best judgement about how to proceed. This is why the measured compute time is approximate. Merge Sort and QuickSort are more complicated, but also much faster for large lists. One billion is or 10 9. 
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The applet can perform five different sorting algorithms: If you are dealing with a large number of items, there will be a noticeable time interval before the computer starts sorting. Different algorithms have different values for K. An item has been removed from the list and placed in "Temp. If this does not happen, then the algorithm you are looking at is probably not an N 2 algorithm.
The xSortLab Applet
In each major phase of the algorithm, the next largest item is found and xsortab into position at the end of the list. For some algorithms, the answer is yes. Info and Instructions The program xSortLab. It is not possible to work with more than million numbers, so there are limits on the array size and on the number of arrays.
QuickSort is, on average, the fastest. It is also the most common example in the "analysis of algorithms," which is the study of computational procedures and of the amount of time and memory that they require.
An arrow labeled "Max" is pointing to item number 2, since that is the largest item that the computer has seen so far during this phase of the sort. The reason for using more than one array is that for small arrays, the time it takes to sort a single array is a tiny fraction of a second. It takes three copy operations to perform a swap: Remember, though, that there is room for some "experimental error" because of the difficulty of measuring compute time.
Then it sorts each array, one after the other. You can compute this function using the "log" button on your calculator.
The merged list that is being formed is in the bottom row, surrounded by a bigger green box. You probably want xxortlab adjust the number of arrays so that the total time is at least one second.
In the picture below, the four black bars have already been moved into position, and the xsortlav is in the middle of the next phase. The statistics are output as a table that you can easily copy-and-paste into a text editor if you want to save the data. You should be able to use the data you collected in the previous section of the lab to calculate a K-value for Bubble Sort running on your computer.
In the picture below, the items that are enclosed in a green xslrtlab have been sorted into increasing size.
Also, xsortlabb in mind that the values calculated for K tend to get more accurate as N increases. Changing panels while a sort is in progress will abort the sort. Below the pop-up menu are three buttons and a checkbox that can be used to control the applet. You would typically use the Visual Sort panel by stepping slowly through the algorithm to see how it works in detail.
Christos Rodosthenous
To find the largest item in a list, the computer moves through the list one item at a time, keeping track of the largest item it has seen so far. Some algorithms are more efficient than others, in that less time or memory is required to execute them.
The picture below shows QuickSortStep being applied to the original list of sixteen items. When you click the "Start Sorting" button, the name of the button will change to "Abort. The applet might incorrectly include this time in the compute time it reports. Consider the data that you collected on the compute time of the five sorting algorithms. The lower message xsortkab displays a detailed comment on each step in the sort.
Now, xaortlab that you take this list and sort it into alphabetical order by first name.
This information is displayed in the lower right section of the applet. You can view this log by selecting the "Log" option from the pop-up menu at the top of the applet.
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