Known Participant

Question

Prime Calculator

Forum|Forum|18 years ago
May 1, 2007
47 replies
4835 views

Hello everyone,

for the last week i have been trying to develop a prime number calculator. at first, it was a single input function that determined if it was prime or not. now it takes two numbers (min, max) but it takes to long and is not efficient enough to computer anything large within a certain range. (i.e. 0-15000). how would i make this algorithm significantly more efficient... without using the for loop to compare each number against a modulus check.

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code attached with screen print of flash file
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download zip version with all files:
rar version: prime number test (flash cs3+as2)
zip version: prime number test (flash cs3+as2)
thank you for any help
isaaac

ActionScript

This topic has been closed for replies.

kglad

Community Expert

0x means a hexadecimal number follows. if you want to see the decimal representation of a hex number (like var1), just use:

trace(var1);

p.s. this is the 23k post. and thanks!

I

isaacewingAuthor

Known Participant

by the time you read this it will already be time to say....

HAPPY 23K post, man... that is ALOT of posts!

I

isaacewingAuthor

Known Participant

how would i make those positive numbers, it shows me negative ones... if i wanted them to be 0, or above that, what would i do... i understand how hex and decimal works but i have no idea what the 0x... means.

kglad

Community Expert

that converts the number 0xFFB0 to a 32 bit integer and then shifts the bits 2 places to the right.

the easiest way to understand that is to use something like:

var1 = 0xFFB0;
trace(var1.toString(16));
var2 = 0xFFB0 >> 2; // try using an 8 instead of a 2 to see something more understandable
trace(var2.toString(16));

I

isaacewingAuthor

Known Participant

hey what does this mean?

{(0xFFB0 >> 2) in decimal format}

kglad

Community Expert

you're welcome. and good luck!

I

isaacewingAuthor

Known Participant

well i think your right which is why i had to ask...

1 - my project does not need to be in as3 and i am exceptionally proficient with as2. i just wanted to learn as3, it was not required... i would rather just create a personal project in order to fulfill my wants for learning the new version.

2 - i do not plan to finish this asap... i would like to but i do not think that is a realistic expectation i can fulfill.

3 - i agree and... super! i think i will hit that as2 up.

thanks for the help and i will keep this forum alive for the rest of the time adobe is around haha. ill give you some updates.. thank you for the help... stay in touch orrr stay on this forum!

kglad

Community Expert

it depends upon your goals.

first, if your project absolutely needs some feature of a.s 3, you have to stay with a.s. 3. 2nd, if you're not that proficient with a.s. 2, you may as well stay with a.s. 3 and not look back at a.s. 2. it is a dead language that will disappear over the next 5 to 10 years.

next, if you need to get this finished asap and you're much more proficient in a.s. 2 than a.s. 3 and you don't need anything in a.s. 3 for your project, you're probably better off going to a.s. 2.

and finally, if time is not critical and you want to learn a.s. 3, having a project to complete is a good way to learn.

I

isaacewingAuthor

Known Participant

never mind kglad, it is something else and man i am thinking it would just be easier if i had linked classes that called whatever was needed as needed and convert this all to as2.0... the thing is i have been recoding and reconstructing the entire thing over and over again and man i am beyond completely vexed... i really really really like the way as3 provides much better support for loading variables...

i guess my final question (for now!!) would be what do you think... should i just invest the time and convert this as2.0 or continue in as3.0 and rebuild this peice by piece and try to figure out what the problem is.

I

isaacewingAuthor

Known Participant

never mind kglad, it is something else and man i am thinking it would just be easier if i had linked classes that called whatever was needed as needed and convert this all to as2.0... the thing is i have been recoding and restructing the entire thing over and over again and man i am beyond completely vexed... i really really really like the way as3 provides much better support for loading variables...

i guess my final question (for now!!) would be what do you think... should i just invest the time and convert this as2.0 or continue in as3.0 and rebuild this peice by piece and try to figure out what the problem is.

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