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761 B

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

Code provided

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