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js-mentorship-razvan / javascript

Javascript study notes
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Sum of Digits / Digital Root #546

Closed RazvanBugoi closed 4 years ago

RazvanBugoi commented 4 years ago

https://www.codewars.com/kata/541c8630095125aba6000c00/train/javascript

RazvanBugoi commented 4 years ago 
function digital_root(n) {
  //base case below
  if(n < 10) return n;
  return digital_root([n].join().split('').reduce((a,b) => Number(a) + Number(b), 0));
}