C#•2y ago

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How do I make a list? And how do I make it so it picks one of the words/numbers in the strings? (e.g. like random.randint([1, 2, 3]) or random.choice([Rock, Paper, Scissors]) in Python)

16 Replies

Thinker•2y ago

List<int> list = new() { 1, 2, 3, 4, 5 }; // Create a list
var number = list[3]; // Get the 4th element

List<int> list = new() { 1, 2, 3, 4, 5 }; // Create a list
var number = list[3]; // Get the 4th element

You can use Random.Shared.Next(0, list.Count) to get a random index from the list, then you can use that to get a random element. Well, you first need to get a random index

arloOP•2y ago

I meant to ping the message, sorry for deleting it.

Thinker•2y ago

You can then index the list using that index

arloOP•2y ago

So indexes for strings are the same for numbers?

Thinker•2y ago

Wdym? Indexes are almost always integers Things like lists, arrays, and strings can be indexed by using []

arloOP•2y ago

I meant, are string indexes the same as integer indexes? Like: string myString = "Hello" Console.WriteLine(myString[0])

Thinker•2y ago

I don't know what "integer index" is supposed to mean Integers are used to index things

arloOP•2y ago

Never mind, but to get a random index, would it be like string myString = "Hello" Console.WriteLine(myString.IndexOf.random) I'm not sure if that's valid code

Thinker•2y ago

Well, the quintessential method to get a random number is Random.Shared.Next If you want to get a random index from a string, then you firstly need the length of the string, which you can get using myString.Length. Secondly you need to call Random.Shared.Next, which takes two arguments, the first being the lower bound (which in this case will be 0) and the second being the exclusive upper bound (which in this case is the length of the string).

arloOP•2y ago

How would that be implemented into code? (Sorry for all this hassle)

Thinker•2y ago

I trust that you'll be able to analyze this and not just blindly copy it

var myString = "Hello";
// Get a random index between 0 and the length of the string 
var index = Random.Shared.Next(0, myString.Length);
// Index the string using the index
var randomCharacter = myString[index];

var myString = "Hello";
// Get a random index between 0 and the length of the string 
var index = Random.Shared.Next(0, myString.Length);
// Index the string using the index
var randomCharacter = myString[index];

arloOP•2y ago

Of course. One last question, does var stand for variable? I don't want to assume it does

Thinker•2y ago

it does var x = 0; means "create a variable called 'x' has has the type of whatever is on the other side of the = sign" You can also write int x = 0; to specify the type explicitly, it's just up to preference.

arloOP•2y ago

Thanks for all the help; appreciated.

Florian Voß•2y ago

if you index string its like c# would call ToCharArray() on that string in the background. an array of any type can be accessed the same way

Accord•2y ago

Was this issue resolved? If so, run /close - otherwise I will mark this as stale and this post will be archived until there is new activity.

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