Sha256: 24a30b980604d1c6d7caa73772fb79e322c4b08cd4b7c118abd848c9ee9016ca
Contents?: true
Size: 1.05 KB
Versions: 119
Compression:
Stored size: 1.05 KB
Contents
'use strict';
function Series(numberString) {
if (numberString.match('[^0-9]')) throw new Error('Invalid input.');
this.numberString = numberString;
this.digits = this.getDigits();
}
Series.prototype.getDigits = function () {
return this.numberString.split('').map(function (digit) {
return parseInt(digit, 10);
});
};
Series.prototype.largestProduct = function (size) {
if (size < 0) throw new Error('Invalid input.');
var product;
var max = 0;
this.slices(size).forEach(function (slice) {
product = slice.reduce(function (a, b) {
return a * b;
}, 1);
if (product > max) { max = product; }
});
return max;
};
Series.prototype.slices = function (sliceSize) {
var result = [];
var slice = [];
if (sliceSize > this.digits.length) {
throw new Error('Slice size is too big.');
}
for (var i = 0; i < this.digits.length - sliceSize + 1; i++) {
for (var j = 0; j < sliceSize; j++) {
slice.push(this.digits[i + j]);
}
result.push(slice);
slice = [];
}
return result;
};
module.exports = Series;
Version data entries
119 entries across 119 versions & 1 rubygems