can this array of numbers sequence be represented in less characters (excluding whitespace) than this?
i = [0,1,2,3,4,5,6,7,8,0,3,6,1,4,7,2,5,8,0,4,8,6,4,2];
(52 chars)
or a function i which returns the same values in under 52 chars
the aim is to reduce the number of characters used to represent the code.
i='012345678036147258048642'.split('');
parseInt() will still be 49 characters ;)
+ instead of parseInt()? ;-)I don't necessarily recommend this... (because I don't think you should "wreck" the String object) but in theory you could do this:
<script>
String.prototype.toNumericalArray = function(){
var arr = this.split('');
for(var i=0;i<arr.length;i++){
arr[i] = 0+i;
}
return arr;
}
</script>
Then when you want it, all you need is:
<script>
s='012345678036147258048642';
n = s.toNumericalArray();
alert(typeof(n[3]));//number
alert(typeof(n[7]));//number
alert(typeof(n[9]));//number
</script>
And if you are really worried about the number of characters, you can minify all the variables / method name
i='012345678036147258048642'.x();
(thus if you exclude the initial prototype, any future calls would be 33 characters (for the same size list))
I would always go with the comma separated array,
it's less overhead than any conversion process.
But the idea of a quick method to turn a string of digits
into an array of numbers appealed to my evil twin...
String.prototype.dA= function digitArray(){
return eval('['+this.replace(/(\d)/g,'+$1,')+']');
}
i='012345678036147258048642'.dA(); (34 characters)
// test i
for(var j= 0, L= i.length; j<L;j++){
i[j]= i[j]+' ('+typeof i[j]+')';
}
i.join(', ')
/* returned value: 0 (number), 1 (number), 2 (number), 3 (number), 4 (number), 5 (number), 6 (number), 7 (number), 8 (number), 0 (number), 3 (number), 6 (number), 1 (number), 4 (number), 7 (number), 2 (number), 5 (number), 8 (number), 0 (number), 4 (number), 8 (number), 6 (number), 4 (number), 2 (number) */
"012345678036147258048642". For other bases you could use a different encoding.