This content originally appeared on DEV Community and was authored by Rakesh Reddy Peddamallu
Explanation
The trick is IV is 4 because , I which is 1 is less than V which is 5
so we check in the iteration , that if next number is greater than current , then we need to take difference , else we can just add the value of Roman symbol
Javascript Code
/**
* @param {string} s
* @return {number}
*/
var romanToInt = function (s) {
const RomanToIntmap = {
"I": 1,
"V": 5,
"X": 10,
"L": 50,
"C": 100,
"D": 500,
"M": 1000
}
let res = 0;
for (let i = 0; i < s.length; i++) {
let curr = RomanToIntmap[s[i]];
let next = RomanToIntmap[s[i + 1]];
if (next > curr && next !== undefined) {
res += next - curr;
i++;
}
else {
res += curr;
}
}
return res
};
This content originally appeared on DEV Community and was authored by Rakesh Reddy Peddamallu
Print
Share
Comment
Cite
Upload
Translate
Updates
There are no updates yet.
Click the Upload button above to add an update.
APA
MLA
Rakesh Reddy Peddamallu | Sciencx (2025-02-26T05:29:57+00:00) Leetcode – Roman to Integer. Retrieved from https://www.scien.cx/2025/02/26/leetcode-roman-to-integer/
" » Leetcode – Roman to Integer." Rakesh Reddy Peddamallu | Sciencx - Wednesday February 26, 2025, https://www.scien.cx/2025/02/26/leetcode-roman-to-integer/
HARVARDRakesh Reddy Peddamallu | Sciencx Wednesday February 26, 2025 » Leetcode – Roman to Integer., viewed ,<https://www.scien.cx/2025/02/26/leetcode-roman-to-integer/>
VANCOUVERRakesh Reddy Peddamallu | Sciencx - » Leetcode – Roman to Integer. [Internet]. [Accessed ]. Available from: https://www.scien.cx/2025/02/26/leetcode-roman-to-integer/
CHICAGO" » Leetcode – Roman to Integer." Rakesh Reddy Peddamallu | Sciencx - Accessed . https://www.scien.cx/2025/02/26/leetcode-roman-to-integer/
IEEE" » Leetcode – Roman to Integer." Rakesh Reddy Peddamallu | Sciencx [Online]. Available: https://www.scien.cx/2025/02/26/leetcode-roman-to-integer/. [Accessed: ]
rf:citation » Leetcode – Roman to Integer | Rakesh Reddy Peddamallu | Sciencx | https://www.scien.cx/2025/02/26/leetcode-roman-to-integer/ |
Please log in to upload a file.
There are no updates yet.
Click the Upload button above to add an update.