Sha256: a311a44acc7421ab26b9187aa6be2f7ae0248069cd5ef7c4dcee324f226b4bea
Contents?: true
Size: 1.46 KB
Versions: 54
Compression:
Stored size: 1.46 KB
Contents
const isValidBase = (base: number) => {
return !base || base < 2 || Math.floor(base) !== base
}
const isInputValid = (array: number[], base: number) => {
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 = (num: number, outputBase: number) => {
let tmp = num
const result = []
while (tmp) {
result.unshift(tmp % outputBase)
tmp = Math.floor(tmp / outputBase)
}
return result
}
export default class Converter {
convert(array: number[], inputBase: number, outputBase: number) {
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
54 entries across 54 versions & 1 rubygems