Menu
Possible Duplicate:
Randomize a List<T> in C#
shuffle (rearrange randomly) a List<string>
Random plot algorithm
Hi I have the following list and I want to output the model into a list but do so randomly. I have seen a few examples but they seem to be really convuluted. I just want a simple way to do this?
List<Car> garage ----randomise------> List<string> models
List<Car> garage = new List<Car>();
garage.Add(new Car("Citroen", "AX"));
garage.Add(new Car("Peugeot", "205"));
garage.Add(new Car("Volkswagen", "Golf"));
garage.Add(new Car("BMW", "320"));
garage.Add(new Car("Mercedes", "CLK"));
garage.Add(new Car("Audi", "A4"));
garage.Add(new Car("Ford", "Fiesta"));
garage.Add(new Car("Mini", "Cooper"));
731
Python Random shuffle() Method The shuffle() method takes a sequence, like a list, and reorganize the order of the items. Note: This method changes the original list, it does not return a new list.
The random. sample() function returns the random list with the sample size you passed to it. For example, sample(myList, 3) will return a list of 3 random items from a list. If we pass the sample size the same as the original list's size, it will return us the new shuffled list.
Method : Using zip() + shuffle() + * operator In this method, this task is performed in three steps. Firstly, the lists are zipped together using zip(). Next step is to perform shuffle using inbuilt shuffle() and last step is to unzip the lists to separate lists using * operator.
I think all you want is this, it's a simple way to do it;
Random rand = new Random();
var models = garage.OrderBy(c => rand.Next()).Select(c => c.Model).ToList();
//Model is assuming that's the name of your property
Note : Random(), ironically, isn't actually very random but fine for a quick simple solution. There are better algorithms out there to do this, here's one to look at;
http://en.wikipedia.org/wiki/Fisher-Yates_shuffle
179
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
