peebeebee · October 11, 2018 18:31
diff --git a/roman b/roman
 const roman = 'XXVIV';
 const mapping = {'X': 10, 'I': 1, 'V': 5}; // add stuff
 const total = roman.split('').map(el => mapping[el]).reduce((acc, curr, i, src) => {
  let prev = src[i-1];
  return (prev && curr > prev)
    ? acc - prev + (curr-prev)
    : acc + curr;
 }, 0);
	const roman = 'XXVIV';
	const mapping = {'X': 10, 'I': 1, 'V': 5}; // add stuff
	const total = roman.split('').map(el => mapping[el]).reduce((acc, curr, i, src) => {
	let prev = src[i-1];
	return (prev && curr > prev)
	? acc - prev + (curr-prev)
	: acc + curr;
	}, 0);