Sha256: 07ed75142a7d42660b7eaa2195ca0a9b42f444a8b8cec6c5452c368ef454fbb2
Contents?: true
Size: 1.28 KB
Versions: 185
Compression:
Stored size: 1.28 KB
Contents
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;
};
export default class Converter {
convert(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) => accumulator * inputBase + value, 0);
return convertFromDecimalToBase(decimalValue, outputBase);
}
}
Version data entries
185 entries across 185 versions & 1 rubygems