public/subjects/find-expression.en.md

Find Expression

Instructions

Create a function called findExpression that takes a number as parameter and returns a string

• It will be given two constant variable add4 and mul2

• Your goal is to try to find a sequence, starting from the number 1, and repeatedly either adding 4 or multiplying 2 that produces the number given has parameter. For example, the number 8 you must first multiplying by 2 twice and then add 4. It will look something like this 1 *2 *2 +4

• If the number can not be reached you should return undefined

Notions

• https://nan-academy.github.io/js-training/examples/loops.js
• https://nan-academy.github.io/js-training/examples/recursion.js

Code provided

const add4 = '+4'
const mul2 = '*2'