Chandoo uses WordPress as the blogging engine at Chandoo.org.
The WordPress system includes a HTML enabled post engine, meaning that users can post any valid HTML Code and the WordPress engine will attempt to interpret and present what has been posted.
I need to note that the engine used by Chandoo.org posts and the Chandoo.org/Forums posts are slightly different. The engine used by the Chandoo.org/Forums uses a limited subset of the HTML Codes.
Chandoo does give us a small clue at the bottom of a new post window in the Chandoo.org/Forums that we can use codes in the comments:
How do I use these codes
When entering your post or response simply put the appropriate code in front of the block of text you want it to apply to and close the code at the end of the block
You type: This is in <Strong> Bold </Strong>.
WordPress Displays: This is in Bold.
So What codes Can I use
The following table highlights some of the more common HTML codes that are available for use in post comments.
Codes that work in both Chandoo.org and Chandoo.org Forums
Codes that will only work in Chandoo.org posts.
The following codes will not work in the Chandoo.org Forums
Animated PIctures
Animation can be added to a picture by including a link to an Animated GIF file.
This is only available in the Chandoo.org posts.
WARNING !
The old saying: “Less is More”, is very applicable here.
Just because you can use lots of Fancy HTML in your post, doesn’t mean you should.
Please limit your artistic expressions or face having your post edited or deleted.
Examples
The example HTML codes used above aren’t available to copy and paste above, as they are actually pictures of the codes.
Had I used the real codes, they wouldn,t display the codes, but would display the text after the codes have been applied.
However all the codes are available in the attached HTML Examples file.
Software and Picture Caches
Image Capture: I use the Snipping Tool that comes free with Windows Vista/Win 07. Goto Start, All Programs, Accessories to find the Snipping Tool.
Image Editing: Chandoo and I both use Paint.net. Paint.NET is a free download available at www.paint.net
I also use CorelDRAW and Corel Photo Paint www.corel.com
Animated Gif: Chandoo and I both use TechSmith’s Camtasia Studio for capturing sequences to animated GIF files.
Image Sharing: I use the free TinyPic web site for the storage of pictures shown on Chandoo.org
Where Can I Learn More About HTML?
This post isn’t meant as a HTML Primer/Reference.
There are many other HTML codes that area available to do lots of other formatting, like Marquees, Scroll Boxes and Multi Column layouts.
If you want to learn more about HTML codes have a look at the following links:
http://en.wikipedia.org/wiki/HTML
http://en.wikipedia.org/wiki/Html_codes
There are lots of examples of HTML codes available on the web:
http://www.quackit.com/html/codes/
http://www.w3schools.com/html/html_examples.asp
19 Responses to “How to Distribute Players Between Teams – Evenly”
An excellent solution, especially for large data sets.
Another solution without using solver would be to assign the player with the highest score to Team 1, the 2nd to team 2, 3rd to team 3, 4th to team 3, 5th to team 2, 6th to team 1, 7th to team 1 and it continues. This method would end up with a Std Dev of 0.001247219. This works best with a distribution with lower Std Dev for the dataset.
Full Disclosure: this is not my idea, remember reading something a few years ago. Think it may have been Ozgrid
thinking back I now remember why I read about it. About 10 years back I had to distribute around 300 team members into 25-30 odd teams. Used this method based on their performance scores. I used the method I described to do this and the distribution was pretty fair.
Solver would have saved me a ton of time though 🙂
I think the issue with you first Solver approach was that you took the absolute value of the sum of team deviations (which should always be zero except for rounding) instead of the sum of the absolute values (which is a reasonable measure of how unbalanced the teams are).
Here's another simple algorithm you could use: you start from the top (with players sorted from high to low), and at each step allocate the next player to whichever team has the smallest total so far. You can implement it dynamically with some formulas so it will update automatically when the data changes.
If the scores were more widely distributed (so that this might end up with not all teams the same size), you could add a constraint to only pick among the teams which currently have fewest players at each step, or just stop adding to any team when it hits its quota.
When I tried it on the sample, I got the three teams below, with a STDEV of 0.000942809 (i.e. about half of what Solver got to).
Team 1: John, Hugo, Tom, Josh, Eric, Zane, Charles, Andrew
Team 2: Barry, Michael, Kenny, Joe, Xavier, Patrick, Oliver, William
Team 3: Henry, Steven, Ben, Frank, Kyle, Edward, Cameron, Lachlan
Thanks for sharing!
Hi,
I was looking at all the solutions and this is closest to what I intended to do. I am dividing a bunch of players into 3 soccer teams. Players availability is also a factor while deciding the teams.
So the steps the excel needs to do is as follows:
1) In availability column if "yes" go to next
2) Equally divide 'Goalkeepers', 'Strikers', 'Defenders' basis their quality
So the end result gives each 3 teams a balance of players playing at different positions.
Can this be done on Google spreadsheet with only availability as an input from the user and rest calculates by itself.
Sorry for asking such a pointed question, but I have been struggling to find a solution for it for sometime now!
Hi Ishaan,
I am working on a similar problem at the moment, so I am wondering if you ever found a solution and if you are willing to share what you did.
Hi everyone, this is a variation of the famous Knapsack Problem https://en.wikipedia.org/wiki/Knapsack_problem.
I had to use a VBA implementation recently as part of a problem, where we ar trying to allocate teams of an organization into different locations (we are a large company with many different team). The goal was to optimally allocate teams to individual buildings without putting too many teams into one building and not splitting teams apart.
As we had around 400 teams of different sizes, solver couldn't handle it anymore. Luckily there is a Knapsack algorithm implementation in VBA readily available on the internet :).
I also went with a heuristic approach first!
An interesting mathematical solution but what if Eric and Xavier can't stand each other or Patrick is best friends with Steven - the real life problems that effect "even" teams.
@Joe
You can add more criteria like
If Eric and Xavier can't stand each other
=OR(AND(E15=1,E16=1),AND(F15=1,F16=1),AND(G15=1,G16=1))
It must be False
If Patrick is best friends with Steven
=OR(AND(E5=1,E17=1),AND(F5=1,F17=1),AND(G5=1,G17=1))
It must be True
Note that the 2 formulas above are exactly the same
except for the ranges
One must be True = Friends
One must be False = Not Friends
Nice Post!
Just one question What if number of players are not even or equally divisible.
Nice post Hui!
I download your workbook and just try to change in options the Precision Restriction from 10E-6 to 10-8 and the Convergence from 10E-4 to 10E-10. The process take almost the same time, but the results was great.
The standard deviation I got was 0,000471.
Team 1: John, Tom, Kenny, Frank, Eric, Xavier, Edward, Zane
Team 2: Steven, Hugo, Ben, Joe, Josh, Oliver, Cameron, William
Team 3: Barry, Henry, Michael, Kyle, Patrick, Charles, Andrew, Lachlan
Great application of Solver! Thanks for the link!
Great explanation. Well done... However, I tried with 6 teams of 4 players and solver never did finish.
How about vba code for the same data set.
I have 3 column A B C wherein A has text and B has number Wherein C is blank. And in C1 been the header C2 where I want the name to come evenly distributed the number which is in Column B.
My Lastcolumn is 1000.
Sorry if I'm being slow here, but how is 'Team Score' calculated? I've gone through the explanation several times but it seems to just appear.
@Hrmft
This process uses the Solver Excel addin
Solver is effectively taking the model and trying different solutions until it gets a solution that meets all the criteria
Then solver puts the solution into the cell and moves to the next cell
So yes it appears to "just appear"
Hi ! Thank you so much ! Works great 🙂
I cannot get the fourth Equation to work in my excel spreadsheet
You have =($E$2:$G$25=0)+($E$2:$G$25=1)=1 as a SUMIF solution, I have, =($F$2:$H$13=0)+($F$2:$H$13=1)=1 as my solution but it does not work. The only thing I changed is the ranges. Any suggestions?
Thank you.
Jim
I cannot get the fourth Equation of TURE or FALSE statements to work in my excel spreadsheet You have =($E$2:$G$25=0)+($E$2:$G$25=1)=1 as a SUMIF solution, I have, =($F$2:$H$13=0)+($F$2:$H$13=1)=1 as my solution but it does not work. The only thing I changed is the ranges. Any suggestions?
Sorry I left some of it out in the previous question,
Thank you. Jim