Sha256: 12f422d4c05ce76ca284cce9623fb09ae6f2e8ced977e5a57395dcee2f512545
Contents?: true
Size: 1.33 KB
Versions: 366
Compression:
Stored size: 1.33 KB
Contents
'use strict';
const Converter = function () { };
const isValidBase = function (base) {
return !base || base < 2 || Math.floor(base) !== base;
};
const isInputValid = function (array, base) {
if (!array || !array.length) {
return false;
}
const val = base - 1;
for (let i = 0, n = array.length; i < n; i++) {
const tmp = array[i];
if (tmp > val || tmp < 0) {
return false;
}
}
return true;
};
const convertFromDecimalToBase = function (num, outputBase) {
let tmp = num;
const result = [];
while (tmp) {
result.unshift(tmp % outputBase);
tmp = Math.floor(tmp / outputBase);
}
return result;
};
Converter.prototype.convert = function (array, inputBase, outputBase) {
if (isValidBase(inputBase)) {
throw new Error('Wrong input base');
}
if (isValidBase(outputBase)) {
throw new Error('Wrong output base');
}
const regexp = new RegExp('^0.', 'g');
const str = array.join('');
if (str.match(regexp)
|| !isInputValid(array, inputBase)) {
throw new Error('Input has wrong format');
}
if (str === '0') {
return [0];
}
if (str === '1') {
return [1];
}
const decimalValue = array
.reduce((accumulator, value) => {
return accumulator * inputBase + value;
}, 0);
return convertFromDecimalToBase(decimalValue, outputBase);
};
module.exports = Converter;
Version data entries
366 entries across 366 versions & 1 rubygems