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peebeebee/roman

Last active October 11, 2018 18:31
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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);
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