Sha256: 66f86631aef97ee29eafc5e87165c52396798cc4335fce1aa789e25679b453c8
Contents?: true
Size: 1.04 KB
Versions: 255
Compression:
Stored size: 1.04 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, 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
255 entries across 255 versions & 1 rubygems