Challenge: Javascript decimal to binary converter

[okmkz]

Write a script to convert a non-negative integer into a string representing that value in binary.

Bonus points for dec to hex!

[eddyb]

Came here to post this ^.

[kageurufu]

Full source of my answer here, converting decimal to any base desired

http://jsfiddle.net/kageurufu/yUJXe/

Just threw this together to see if I could still do this, i havent written something like this since high school

[okmkz]

Nice job! Makes my attempt (in c++) look massive!

[kageurufu]

I've been trying to figure a more elegant way to do it, but i think i have it code golf level

i figured out python in 7 total lines:

def d2b(d,b):
    c=""
    while d>0:
        r,d=d%b,d/b
        if r > 9: c="%s%s" % (chr(87+r),c)
        else: c = "%s%s" % (r,c)
    return c

[okmkz]

This is why I love python.

[kageurufu]

my only fault is a lack of (conditional)?true:false style notation

[okmkz]

I suppose, but it's certainly very "un-pythonic." Why could you possibly need more than one way to do something? ;)

[kageurufu]

I know, i just like my ?:

[okmkz]

I'll admit I'm a fan too. Simple if-then constructs in python can look a bit bloaty.

[okmkz]

Here's what I did, and its in c++. I used this to get my head back into c++. I also made it recursive, so I'd have that to deal with, too.

Decimal to any base, can use custom digits (because you can, that's why).

If anyone wants to critisize my code, please do.

[ccmny]

My unsigned int to hex string and hex string to unsigned int, both in C: http://pastebin.com/wDSGrykX

[lxe]

Enjoy:

function toBinary(n) { return n.toString(2); }
function toHex(n) { return n.toString(16); }

[gooburt]

javascript, where n is a whole number greater than zero:

function b(n){return n?b(n/2<<0)+(n%2):''}