十进制转其他进制

十进制转其他进制

代码

javascript

export function getMapNumberToString (base) {
  const res = {}
  if (base < 10) return res
  const strList = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z']
  let curIndex = 10
  while (curIndex < base) {
    res[curIndex] = strList[curIndex - 10]
    curIndex++
  }
  return res
}

typescript

export function getMapNumberToString (base: number) {
  const res: { [key: string]: string } = {}
  if (base < 10) return res
  const strList = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z']
  let curIndex = 10
  while (curIndex < base) {
    res[curIndex] = strList[curIndex - 10]
    curIndex++
  }
  return res
}

javascript

// 十进制转其他进制
// 输入：decimalToOtherBase(10, 2)
// 输出：'1010'

import { getMapNumberToString } from "../../utilsJs"

export function decimalToOtherBase (num, base) {
  if (base === 10 || base > 36 || base < 2) return String(num)
    const numToStr = getMapNumberToString(base)
  let res = ''
  while (num > 0) {
    const remainder = num % base
    const curStr = remainder > 9 ? numToStr[remainder] : remainder
    res = curStr + res
    num = ~~(num / base)
  }
  return res
}

typescript

// 十进制转其他进制
// 输入：decimalToOtherBase(10, 2)
// 输出：'1010'

import { getMapNumberToString } from "../../utils"

export function decimalToOtherBase (num: number, base: number): string {
  if (base === 10 || base > 36 || base < 2) return String(num)
  const numToStr = getMapNumberToString(base)
  let res = ''
  while (num > 0) {
    const remainder = num % base
    const curStr = remainder > 9 ? numToStr[remainder] : remainder
    res = curStr + res
    num = ~~(num / base)
  }
  return res
}

测试代码

test

import { expect, test } from 'vitest'
import { decimalToOtherBase } from './typescript.ts'
import { decimalToOtherBase as decimalToOtherBaseJs } from './javascript.js'

test(`decimalToOtherBase(10, 2)`, () => {
  expect(decimalToOtherBase(10, 2)).toBe('1010')
})

test(`decimalToOtherBaseJs(10, 2)`, () => {
  expect(decimalToOtherBaseJs(10, 2)).toBe('1010')
})

test(`decimalToOtherBase(30, 8)`, () => {
  expect(decimalToOtherBase(30, 8)).toBe('36')
})

test(`decimalToOtherBaseJs(30, 8)`, () => {
  expect(decimalToOtherBaseJs(30, 8)).toBe('36')
})

test(`decimalToOtherBase(30, 16)`, () => {
  expect(decimalToOtherBase(30, 16)).toBe('1e')
})

test(`decimalToOtherBaseJs(30, 16)`, () => {
  expect(decimalToOtherBaseJs(30, 16)).toBe('1e')
})

test(`decimalToOtherBase(34, 12)`, () => {
  expect(decimalToOtherBase(34, 12)).toBe('2a')
})

test(`decimalToOtherBaseJs(34, 12)`, () => {
  expect(decimalToOtherBaseJs(34, 12)).toBe('2a')
})

test(`decimalToOtherBase(100, 36)`, () => {
  expect(decimalToOtherBase(100, 36)).toBe('2s')
})

test(`decimalToOtherBaseJs(100, 36)`, () => {
  expect(decimalToOtherBaseJs(100, 36)).toBe('2s')
})

test(`decimalToOtherBase(10, 38)`, () => {
  expect(decimalToOtherBase(10, 38)).toBe('10')
})

test(`decimalToOtherBaseJs(10, 38)`, () => {
  expect(decimalToOtherBaseJs(10, 38)).toBe('10')
})