Comments on: Programming Brain Teaser

By: piju

piju — Tue, 05 Aug 2008 22:41:38 +0000

cool,
i am not a programmer,
so i dont know what is this,
but,
what i see about you is
you are such a great guy
u own an IT company,
u wrote great stuff
and the most is,
u are italian!

;)

bytheway,
i love pizza

By: Giorgio

Giorgio — Tue, 15 Jul 2008 09:59:09 +0000

@therube:
My script has no output per se.
If you want it to show a result, add this line:
alert(won);

By: therube

therube — Tue, 15 Jul 2008 04:28:04 +0000

For whatever reason, I am not able to get your bookmarklet to work?
No matter how I’ve tried it, I end up with an empty box at the top of the screen?

If I copy/paste into the URL line (prefaced by javascript: ), I correctly get "true".

I had this bookmarklet (which I picked up somewhere?) that I called ‘Execute HTML’. If I recall, I would use it from time to time to execute HTML snippets. But when I try it on on the script, again I end up with a blank page & no "true".

javascript:(function(){var sel;function getText(w){if(w.getSelection){return w.getSelection();}if(w.document.getSelection){return w.document.getSelection();}return w.document.selection.createRange().text;}function getSel(w){try{sel=getText(w);if(sel)return;for(var i=0;F=w.frames[i];i++){getSel(F);if(sel)return;}}catch(e){}}getSel(window);if(!sel)alert('Select some text.');else{w=open();w.document.write(sel);w.document.close();}})()

Nothing here either, http://www.javascriptwindow.com/ ?

By: john

john — Sat, 12 Jul 2008 04:12:39 +0000

pls apologize my stupidity.. but what will this expression do?

By: Sam Hasler

Sam Hasler — Thu, 10 Jul 2008 22:59:09 +0000

Thanks

By: Paul O'Shannessy

Paul O'Shannessy — Thu, 10 Jul 2008 22:51:15 +0000

I like it. Clever use of regular expressions.

By: Giorgio

Giorgio — Thu, 10 Jul 2008 17:12:36 +0000

@Sam Hasler: You need to enter all in one line (unless you store variables in a window object, e.g. using "top.arr") and end the script with an expression but not an assignment, e.g.:

var arr = ['a', 'b', 'c', 'c', 'd','e', 'e','e', 'e', 'e', 'f', 'e', 'f', 'e', 'f', 'a', 'a', 'a', 'f', 'f', 'f']; var solution='a b c c d e e e e e f e f e f a a a f f f'; arr.join(' ').replace(/((\w)\s\2\s)((?:\2\s?)+)(?=\s|$)/g, '$1$3') == solution;

(in one line) will give "true" as its output. A portable, concise bookmarklet to quickly test multiline JS is the following: javascript:document.body.innerHTML="<textarea onchange='eval(this.value)' cols=80 rows=6/>";void(0)

By: Sam Hasler

Sam Hasler — Thu, 10 Jul 2008 14:46:03 +0000

How did you use the Error console? That would be a useful trick to learn. I tired pasting your code into it and clicking on Evaluate but it didn’t do anything.