Weighted random selection





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19
Date Submitted Mon. Oct. 9th, 2006 10:39 PM
Revision 1
Helper inxilpro
Tags "Random Generation" | Generator | Password | PHP | Random
Comments 2 comments
This function creates relatively secure random passwords. It's by no means ideal, but it should work in most non-critical situations. The nice thing is the generator attempts to create passwords that people can pronounce and chooses letters that won't be mistaken for others (such as the numeral "1", an upper-case "i" and a lower-case "L"). To keep the code short much of this functionality is very rudimentary, but it's better than nothing.
14
Date Submitted Fri. Jan. 19th, 2007 2:37 PM
Revision 1
Helper inxilpro
Tags "word list" | Generator | Password | PHP | Random
Comments 0 comments
This is a random password generator that produces understandable passwords based on word lists. I've only included a 3 entry world list because you should chose a list based on your password requirements and your users. If you need to generate passwords that are 14 characters in length, you will want a different list than if you're generating 8 character passwords. And depending on your users, you may want to use certain lists. The list I use is about 4000 words that are 5-7 characters long, all well-known words that have had potentially objectionable content removed. For security reasons I don't want to include this list.

A note on security: though this generates relatively strong passwords for the average user, they are particularly susceptible to brute-force attacks. This is even more an issue if somehow your word list gets compromised. I would not recommend using this function for anything where a highly secure password is needed.

A note on choosing your list: You'll also see that I've built the system to avoid generating passwords with zeros and ones in them. This is because zero and upper-case "o" can be confused as can one, lower-case "L" and upper-case "i." When choosing my word list I was also sure to strip out all words that start with the letter "o" or "i" (to prevent the optional ucfirst() from creating 0/O and I/1 confusion) and words that contain the letter "L" (to prevent l/1 confusion). I find that this greatly helps with preventing confusion, but again weakens the security of the passwords some. It's your choice.
13
Date Submitted Mon. Oct. 2nd, 2006 1:05 PM
Revision 1
Beginner drench
Tags Array | JavaScript | List | Random | shuffle
Comments 3 comments
It works with Array types. The example is a simple list of numbers, but the array could contain anything; lists of strings, functions, DOM nodes, whatever. Unfortunately, a lot of things that seem like arrays in the DOM aren't really, so you can't shuffle the images on a page with just document.images.shuffle() all by itself.
13
Date Submitted Tue. Jul. 11th, 2006 10:34 PM
Revision 1
Coder mattrmiller
Tags Generator | Number | PHP | Random | String
Comments 2 comments
Generate a random number or string in PHP.
11
Date Submitted Mon. Oct. 9th, 2006 4:57 AM
Revision 1
Helper serpentskiss
Tags Password | Random
Comments 1 comments
Creates a random string, usefull for passwords etc.

Use: $password = makeRandomPassword($Length);

If $Length is not specified (ie $password = makeRandomPassword();) then it will default to 8 characters
11
Date Submitted Fri. Jan. 19th, 2007 3:19 PM
Revision 1
Helper inxilpro
Tags alphanumeric | Generate | Generator | ID | Random
Comments 1 comments
This is a simple script to generate a random alphanumeric string.
10
Date Submitted Sat. Mar. 25th, 2006 9:32 PM
Revision 1
Beginner baldo
Tags Calendar | CSS | definition | HTML | List | xhml
Comments 3 comments
this is a css to style a definition list to get a calendar list type.

See the final render.
9
Date Submitted Wed. Dec. 27th, 2006 9:40 AM
Revision 1
Scripter bertheymans
Tags Java | List | Set | uniqueness
Comments 2 comments
This is a very convenient way to remove all doubles from a List in Java. The only prerequisite is that the elements in the list have proper equals and hashCode methods.

It work by using the constructor of a Set that takes a Collection as an argument.

I poured the snippet in a little program so can run it straight away.
9
Date Submitted Fri. Oct. 14th, 2005 5:06 PM
Revision 1
Helper lilleman
Tags Files | Folders | List | PHP
Comments 1 comments
Get a List of Folders and/or Files
8
Date Submitted Thu. Nov. 2nd, 2006 3:51 AM
Revision 1
Scripter SCoon
Tags Algorithm | Genetic | Random | Ruby
Comments 1 comments
Genetic Algorithm implementation.

See also "Weighted random selection" for RandomItemSelector class source.
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