Android Question Choose a random between 4 strings

[SMOOTSARA]

How can I print one of these 4 items by chance?

Dim str1() As String
str1 = Array As String("no", "yes","ooo","test","yyy","nnn")
Log(?????????)

 

[LucaMs]

Dim Index As Int = Rnd(0, str1.Length)
Log(str1(Index))

 

[Erel]

Dim str1() As String = Array As String("no", "yes","ooo","test","yyy","nnn")
Dim str As String = str1(rnd(0, str1.Length))

 

[LucaMs]

Dim str1() As String = Array As String("no", "yes","ooo","test","yyy","nnn")
Dim str As String = str1(rnd(0, str1.Length))

Mine is better

 

[Star-Dust]

Dim str As String = Regex.Split(",","no,yes,ooo,test,yyy,nnn")(rnd(0, 6))

 

[udg]

Mine is better

This one is even better

Dim str1() As String = Array As String("no", "yes","ooo","test","yyy","nnn")
Log(str1(rnd(0, str1.Length)))

No unused vars (str and Index as from #2 and #3 above) ..

 

[LucaMs]

This one is even better

Dim str1() As String = Array As String("no", "yes","ooo","test","yyy","nnn")
Log(str1(rnd(0, str1.Length)))

No unused vars (str and Index as from #2 and #3 above) ..

I wrote that mine is better precisely because I used the variable Index which, in addition to being explanatory, is also "loggable"

 

[Mahares]

If we are tabulating the number of ways, here is another:

Dim MyList As List
MyList.Initialize
MyList.AddAll(Array ("no", "yes","ooo","test","yyy","nnn"))
Log(MyList.Get(Rnd(0, MyList.Size)))

 

[Erel]

Quiz:

What is the difference between:

Dim MyList As List
MyList.Initialize
MyList.AddAll(Array ("no", "yes","ooo","test","yyy","nnn"))

And:

Dim MyList As List = Array ("no", "yes","ooo","test","yyy","nnn")

?

 

[Star-Dust]

The second code generates an static collection and therefore it will no longer be possible to add or remove elements

 

[Peter Simpson]

The second code generates an immutable list and therefore it will no longer be possible to add or remove elements

You're quick on the draw today

 

[Star-Dust]

I would add that the array brings together data of the same type, while in the list you could put different data type

 

[Mahares]

What is the difference between:

No difference to me. They are the same:

MyList.Set(4, "erel")
    For Each s As String In MyList
        Log(s)
    Next

The above works on both

 

[Erel]

I would add that the array brings together data of the same type, while in the list you could put different data type

That's true if the array type is not Object (no type = Object).

No difference to me. They are the same:

Try:

Dim MyList As List = Array ("no", "yes","ooo","test","yyy","nnn")
MyList.Add("Mahares")

 

[LucaMs]

The second code generates an static collection and therefore it will no longer be possible to add or remove elements

Yes but that is an old "story", so I'm thinking Erel means something else; or he forgot that he had already pointed that out to us

 

[Erel]

I was referring to the old story...

 

[LucaMs]

I was referring to the old story...

I am toooo old for that!

 

[Mahares]

Try:

Dim MyList As List = Array ("no", "yes","ooo","test","yyy","nnn")
MyList.Add("Mahares")

I was under the impression that when you use : MyList.set(.., you are actually removing and adding at the same time to come up with the 'replace'. Apparently, that is not the case with list.