randomizing print statements w/arrays

[heavenraiza]

i briefly searched but couldnt find the answer. i am doing a quiz & i want the questions to randomly use the data statements & insert them in print statement. i dont want the code, i want to try to figure this out for the most part but i need some clues on what to use. i know the set up for the print statement but it will only print the last data statement. i thought about RANDOMIZE but it only deals w/numbers. so not sure what else i can use?

[Mango]

Perhaps you could put each question into a member of a string array. Then you could shuffle the array and then get your questions by calling each question in order? See the recent advice/program I wrote in this thread:

http://forum.qbasicnews.com/viewtopic.php?t=4012

Ask if you want a more detailed answer.

[heavenraiza]

i read that thread before i made this thread. i need a detailed explanation please regarding shuffling string arrays please, thanx. . .

[na_th_an]

To shuffle, just do a number of random swaps. For example, shuffing a 10 integers array:

Code:

DIM a%(9)

FOR i% = 0 TO 9: a%(i%)=i%: NEXT

' Let's shuffle:

FOR i%=1 TO 20  ' Let's do 20 swaps, for example.
   SWAP a%(INT (RND*9)), a%(INT (RND*9))
NEXT

' Let's see how they shuffled:

FOR i%=0 TO 9: PRINT a%(i%);:NEXT

[heavenraiza]

oh okay, the key is SWAP. thanx guyz.

[seph]

That's not the only way you can do it. The key isn't SWAP, that's just an added extra feature. It works just as well like this:

Code:

RANDOMIZE TIMER
DIM array(3 to 6)
array(3) = "whatever"
array(4) = "boo"
array(5) = "Seph is kickass"
array(6) = "rocking horses"

PRINT array(INT(RND * UBOUND(array)) + LBOUND(array))

The key is RND. If I'm correct, that equation shall work for any array.

[na_th_an]

Well, seph, that can cause repetitions, and that is not desired in a Quiz.

[Lanzaa]

couldn't you create a string of #'s and remove the #'s that are used?
and then using random #'s take another # and have that be the array you take?

BTW i don't know anything about arrays

P.S. :???: :???: :???: at next post

[Agamemnus]

laff.

[heavenraiza]

why not make a new post rather than editing the old one so people can see what you wrote?

P.S. :???: :???: :???: at next post