Question

我目前正在通过Euler项目工作，目前我需要将一个1000位的数字拆分成一个数组。

我试过这个：

var number = big number here;
var digits = number.toString().split('');

它适用于小数字，但只要输入变得足够大，数组就会采用科学记数法，例如：：

[ '1', '2', '3', '1', '2', '4', 'e', '+', '2', '2' ]

有解决方法吗？

提前致谢！

编辑：欧拉项目问题8（https://projecteuler.net/problem=8）

需要

Answer 1

number = "7316717653133062491922511967442657474235534919493496983520312774506326239578318016984801869478851843858615607891129494954595017379583319528532088055111254069874715852386305071569329096329522744304355766896648950445244523161731856403098711121722383113622298934233803081353362766142828064444866452387493035890729629049156044077239071381051585930796086670172427121883998797908792274921901699720888093776657273330010533678812202354218097512545405947522435258490771167055601360483958644670632441572215539753697817977846174064955149290862569321978468622482839722413756570560574902614079729686524145351004748216637048440319989000889524345065854122758866688116427171479924442928230863465674813919123162824586178664583591245665294765456828489128831426076900422421902267105562632111110937054421750694165896040807198403850962455444362981230987879927244284909188845801561660979191338754992005240636899125607176060588611646710940507754100225698315520005593572972571636269561882670428252483600823257530420752963450";
number = number.split('');

greatestvalue=0;
for(i=0; i<number.length; i=i+1){
	value = [parseInt(number[i],10),parseInt(number[i+1],10),parseInt(number[i+2],10),parseInt(number[i+3],10),parseInt(number[i+4],10),parseInt(number[i+5],10),parseInt(number[i+6],10),parseInt(number[i+7],10),parseInt(number[i+8],10),parseInt(number[i+9],10),parseInt(number[i+10],10),parseInt(number[i+11],10),parseInt(number[i+12],10)].reduce(function(previousValue, currentValue, currentIndex, array) {
	  return previousValue * currentValue;
	});
	if(value>greatestvalue){
		greatestvalue=value;finalindex=i;
	}
}

i = finalindex;
greatestnumbers = [number[i],number[i+1],number[i+2],number[i+3],number[i+4],number[i+5],number[i+6],number[i+7],number[i+8],number[i+9],number[i+10],number[i+11],number[i+12]];
document.write("Greatest Value: "+greatestvalue +"</br>Final Index: "+finalindex+"</br>Greatest Numbers: " + greatestnumbers);

Answer 2

如果您只想使用String而不是Array来对值进行化身处理：

var chaine = nombre.toString();
console.log(chaine);
index = chaine.indexOf("+");
if (index != -1){
  var exposant = chaine.slice(index+1);
  var mantisse = chaine.slice(0, index-1);
  var longueur = mantisse.slice(mantisse.indexOf(".") + 1).length;
  var body = mantisse.substr(0, 1).concat(mantisse.slice(mantisse.indexOf(".")+1));
  var digit = body.concat("0".repeat(exposant-longueur));
  console.log(digit);
}

如何在Javascript中将一个大数字拆分成单个数字？

2 个答案: