Den torsdag 2 april 2015 kl. 16:56:51 UTC+2 skrev jonas.t...@gmail.com:
> Den torsdag 2 april 2015 kl. 16:50:59 UTC+2 skrev jonas.t...@gmail.com:
> > I frankly do not get this.
> >
> > document.calc.expand.value += "String = "+basestr+"String length = "+basestr.length+"\n";
> >
> > newarr = basestr.split(",");
> > i=0;
> > document.calc.expand.value += "Array = "+newarr+"Array length = "+newarr.length+"\n";
> >
> > while (newarr[i]==0) {newarr.shift();}
> >
> > document.calc.expand.value += "Array = "+newarr+"Array length = "+newarr.length+"\n";
> >
> >
> > And this is the result i get, how can the length be set to five of array?
> >
> > String = 0,7,0,2,String length = 8
> > Array = 0,7,0,2,Array length = 5
> > Array = 7,0,2,Array length = 4
>
> It seem somehow an element is expected after last comma, or created at split?
> Is that really correct?
Well i changed the string, but the split mapping from string to Array does not seem correct to me.
<SCRIPT LANGUAGE="Javascript">
/* BASE CHANGER */
function newBase(number, base)
{
number = parseInt(number);
document.calc.expand.value += "BASE = " + base + " NUMBER = " + number + "\n";
basestr = "";
basemultip = 1;
digit = 1;
while (basemultip < number)
{
basemultip = basemultip * base;
digit = digit + 1;
}
while (number > 0 && digit > 0)
{
i = 0;
while (i * basemultip <= number && i < base)
{
j = i;
i ++ ;
}
if (i > 0)
{
subtrahend = basemultip * j;
number = number - subtrahend;
basestr = basestr + j + ",";
}
else
{
basestr = basestr + 0 + ",";
}
basemultip = basemultip / base;
digit -- ;
}
while (digit > 0)
{
basestr = basestr + 0 + ",";
digit -- ;
}
basestr = basestr.substring(0, basestr.length - 1);
newarr = basestr.split(",");
i = 0;
while (newarr[i] == 0)
{
newarr.shift();
}
document.calc.expand.value += "Array = " + newarr + "<-Array length = " + newarr.length + "\n";
return newarr;
}
/* MULTIPLY TWO VARIABLES */
function naiveMult(base, multOne, multTwo)
{
document.calc.comment.value += "[Multiply] " + multOne + sign + multTwo + " \n"
document.calc.comment.value += "FACTOR ONE " + lengthTwo + " digits \n"
document.calc.comment.value += "FACTOR TWO " + lengthOne + " digits \n"
total = [];
result = [];
total[0] = 0;
for (var i = 0; i < lengthTwo; i ++ )
{
multresult = [];
remainder = 0;
tempVal = 0;
tempDig = 0;
j = 0;
if(i > 0)
{
for(zero = 0; zero < i; zero ++ ) multresult[zero] = 0;
}
while(j < lengthOne)
{
intmult ++ ;
tempVal = (multOne[i] * multTwo[j]) + remainder;
remainder = 0;
if (tempVal >= base)
{
tempDig = tempVal % base;
remainder = (tempVal - tempDig) / base;
multresult[j + i] = tempDig;
}
else
{
multresult[j + i] = tempVal;
}
j ++ ;
}
if(remainder != 0)
{
multresult[j + i] = remainder;
}
// document.calc.comment.value += "\n SubSUM= " + total;
// document.calc.comment.value += "\n SubPROD= " + multresult + "\n";
// KOLLA NOGA
if (multresult.length >= total.length)
{
mlength = multresult.length;
mlengthTwo = total.length;
}
else
{
mlength = total.length;
mlengthTwo = multresult.length;
}
for (k = 0; k < mlength; k ++ )
{
if (isNaN(multresult[k])) multresult[k] = 0;
if (isNaN(total[k])) total[k] = 0;
}
naiveAdd(base, mlength, total, multresult);
total = result;
}
// document.calc.comment.value += "\nTOTAL PRDDUKT= " + total;
}
/* ADD TWO VARIABLES */
function naiveAdd(base, alength, addOne, addTwo)
{
// document.calc.comment.value += "\nAdd termOne+termTwo =\n" + addOne + "\n" + addTwo + " + ";
addResult = [];
remainder = 0;
for (i = 0; i < alength; i ++ )
{
intadd ++ ;
addResult[i] = addOne[i] + addTwo[i] + remainder;
// document.calc.comment.value += "\n subAdd = " + addResult[i];
if (addResult[i] >= base)
{
addResult[i] = addResult[i] - base;
remainder = 1;
}
else
{
remainder = 0;
}
// document.calc.comment.value += " DigitValue = " + addResult[i];
// document.calc.comment.value += " carryDigit = " + remainder;
}
if (remainder == 1) addResult[i ++ ] = 1;
else addResult.splice(i, 1);
result = addResult;
return result;
}
/* SUBTRACT TWO VARIABLES */
function naiveSub(base, subOne, subTwo)
{
result = [];
for (i = 0; i < lengthOne; i ++ )
{
j = 0;
if (subOne[i] < subTwo[i])
{
subOne[i] += base;
j = i;
while (subOne[j + 1] == 0)
{
subOne[j + 1] += base - 1;
j ++ ;
}
subOne[j + 1] += - 1;
}
j = 0;
result[i] = subOne[i] - subTwo[i];
}
while (result[lengthOne - 1] == 0)
{
result.splice(lengthOne - 1, 1);
lengthOne += - 1;
}
}
/* PREPARE STRING PAIR */
function strPrep(sign, arrOne, arrTwo)
{
arrOne.reverse();
arrTwo.reverse();
// document.calc.newbase.value += "arrOne " + arrOne + " \n"
if (arrOne.length >= arrTwo.length)
{
lengthOne = arrOne.length;
lengthTwo = arrTwo.length;
}
else
{
lengthOne = arrTwo.length;
lengthTwo = arrOne.length;
}
for (i = 0; i < lengthOne; i ++ )
{
arrOne[i] = parseInt(arrOne[i]);
arrTwo[i] = parseInt(arrTwo[i]);
if (isNaN(arrOne[i])) arrOne[i] = 0;
if (isNaN(arrTwo[i])) arrTwo[i] = 0;
}
}
/* MULTIPLY Container */
function multWrap(sign, arrOne, arrTwo, base)
{
strPrep(sign, arrOne, arrTwo);
naiveMult(base, arrOne, arrTwo);
document.calc.comment.value += sum;
out = total.reverse().toString();
document.calc.comment.value += "Integer ADD operations " + intadd + " \n"
document.calc.comment.value += "Integer MULT operations " + intmult + " \n"
document.calc.comment.value += "Product = " + out;
}
/* SUBTRACTION Container */
function subWrap(sign, strEval, strBase)
{
tONE = parseInt(subtract[0]);
tTWO = parseInt(subtract[1]);
if(tONE < tTWO)
{
strOne = subtract[1];
strTwo = subtract[0];
}
else
{
strOne = subtract[0];
strTwo = subtract[1];
}
strPrep(sign, strOne, strTwo);
naiveSub(base, arrOne, arrTwo);
out = result.reverse().toString();
// document.calc.result.value = out;
}
/* ADDITION Container */
function addWrap(sign, strEval, strBase)
{
strOne = adder[0];
strTwo = adder[1];
strPrep(sign, strOne, strTwo);
naiveAdd(base, lengthOne, arrOne, arrTwo);
out = result.reverse().toString();
// document.calc.result.value = out;
}
/* PARSE THE STRING */
function parser(strEval, strBase)
{
sign = "*";
document.calc.comment.value = "";
document.calc.expand.value = "";
genArr = strEval.split("*");
arrOne = newBase(genArr[0], base);
arrTwo = newBase(genArr[1], base);
document.calc.newbase.value = arrOne + sign + arrTwo;
temp = document.calc.newbase.value;
multWrap(sign, arrOne, arrTwo, base);
// document.calc.firstval.value = multiply[0];
// document.calc.secval.value = multiply[1];
// document.calc.tO.value = strOne;
// document.calc.tT.value = strTwo;
// sign = "-";
// subtract = strEval.split("-");
// subWrap(sign, subtract, strBase);
// sign = "+";
// adder = strEval.split("+");
// addWrap(sign, adder, strBase);
}
/* [MAIN PROGRAM] */
/* [TAKE INPUT FROM FORM] [PARSE THE STRING] [CALCULATE RESULT] */
/* [GENERIC CALCULATIONS] [USING BIGNUMB OPERATORS] [IN ANYBASE] [UPON OPERANDS] */
function fetchValues()
{
intmult = 0;
intadd = 0;
strEval = document.calc.eval.value;
strBase = document.calc.formbase.value;
base = parseInt(strBase);
parser(strEval, base);
}
/* GLOBAL */
var multiply = [];
var subtract = [];
var adder = [];
var arrOne = [];
var arrTwo = [];
var total = [];
var result = [];
var sum = [];
lengthOne = 0;
strOne = "";
strTwo = "";
base = 10;
temp = "";
sign = "";
</SCRIPT>
<!DOCTYPE html>
<html lang="en">
<head><meta charset="utf-8"/></head>
<body bgcolor="gold" onload="fetchValues()">
<H1>Big numbers</H1><P>
<FORM name=calc onSubmit="fetchValues(); return false;">
<B>
INPUT DEC-><input type=submit name="calc" value="Calc"> <input type="text" name="eval" value="702*202" size="60"><br>
BASE <input type="text" name="formbase" value="10" size="10"><br>
This calculation<input type="text" name="newbase" value="" size="60"><br>
<FONT COLOR="white">
EVAL STATS.<br>
<textarea name="expand" rows="20" cols="120"></textarea><br>
<!--
RESULT<input type="text" name="result" value="" size="80"><br>
FIRSTVAL<input type="text" name="firstval" value="" size="80"><br>
SECVAL<input type="text" name="secval" value="" size="80"><br>
tONE Small<input type="text" name="tO" value="" size="80"><br>
tTWO Big<input type="text" name="tT" value="" size="80"><br>
Sum<input type="text" name="msum" value="" size="80"><br>
-->
RESULT</B><br>
<textarea name="comment" cols="120" rows="40" value=""></textarea>
</FORM>
</body>
</html>