12. Integer to Roman (Map)
3894 ワード
Given an integer, convert it to a roman numeral.
Input is guaranteed to be within the range from 1 to 3999.
Input is guaranteed to be within the range from 1 to 3999.
class Solution {
public:
string intToRoman(int num) {
int values[] = {1000, 900, 500, 400, 100, 90, 50, 40, 10, 9, 5, 4, 1 }; //
string numerals[] = {"M", "CM", "D", "CD", "C", "XC", "L", "XL", "X", "IX", "V", "IV", "I" };
int size = sizeof(values) / sizeof(values[0]); //
string result = "";
for (int i = 0; i < size; i++) {
while (num >= values[i]) {
num -= values[i];
result+=numerals[i];
}
}
return result;
}
};