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Create RomanToDecimal.js

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itsvinayak
2020-06-21 10:39:32 +05:30
parent c9b3d25c53
commit 0bb7942a40
1 changed files with 35 additions and 35 deletions
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70
Conversions/RomanToDecimal.js
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@ -1,38 +1,38 @@
var values = {
'I':1,
'V':5,
'X':10,
'L':50,
'C':100,
'D':500,
'M':1000
};
function romanToDecimal(romanNumber){
let prev = ' ';
let sum = 0;
let newPrev = 0;
for(let i = romanNumber.length - 1; i >= 0; i--){
let c = romanNumber.charAt(i);
if(prev !== ' '){
newPrev = values[prev] > newPrev ? values[prev] : newPrev;
}
let currentNum = values[c];
if(currentNum >= newPrev){
sum += currentNum;
} else {
sum -= currentNum;
}
prev = c;
}
return sum;
I: 1,
V: 5,
X: 10,
L: 50,
C: 100,
D: 500,
M: 1000
}
console.log(romanToDecimal('XXIIVV'));
console.log(romanToDecimal('MDCCCIV'));
console.log(romanToDecimal('XXIVI'));
function romanToDecimal (romanNumber) {
let prev = ' '
let sum = 0
let newPrev = 0
for (let i = romanNumber.length - 1; i >= 0; i--) {
const c = romanNumber.charAt(i)
if (prev !== ' ') {
newPrev = values[prev] > newPrev ? values[prev] : newPrev
}
const currentNum = values[c]
if (currentNum >= newPrev) {
sum += currentNum
} else {
sum -= currentNum
}
prev = c
}
return sum
}
console.log(romanToDecimal('XXIIVV'))
console.log(romanToDecimal('MDCCCIV'))
console.log(romanToDecimal('XXIVI'))