Largest product in a series

Goal

Find the greatest product of five consecutive digits in the 1000-digit number.

• example of a 1000-digit number:

731671765313306249192251196744265747423553491949349698352031277450632623957831801698480186947885184385861560789112949495459501737958331952853208805511125406987471585238630507156932909632952274430435576689664895044524452316173185640309871112172238311362229893423380308135336276614282806444486645238749303589072962904915604407723907138105158593079608667017242712188399879790879227492190169972088809377665727333001053367881220235421809751254540594752243525849077116705560136048395864467063244157221553975369781797784617406495514929086256932197846862248283972241375657056057490261407972968652414535100474821663704844031998900088952434506585412275886668811642717147992444292823086346567481391912316282458617866458359124566529476545682848912883142607690042421902267105562632111110937054421750694165896040807198403850962455444362981230987879927244284909188845801561660979191338754992005240636899125607176060588611646710940507754100225698315520005593572972571636269561882670428252483600823257530420752963450

Specs

• Define a Class in largestProduct.js named LargestProduct that accepts a single argument, the 1000-digit number. This number should be set as an instance property.

• This Class will have two instance methods:

  • getLargestProductIndexreturns the starting index of the largest product of 5 consecutive numbers in the 1000-digit number.
  • getLargestProduct returns the value of the largest product of 5 consecutive numbers in the 1000-digit number.

Getting Started

1. npm install to get dependencies
2. npm test to run the tests