12 整数转罗马数字
题目描述
题目分析
按照“一一对应”原则,注意对900,400,90,40,9,4特殊处理即可。
代码如下:
class Solution {
public:
string intToRoman(int num) {
string nums;
vector <int> val{1000,900,500,400,100,90,50,40,10,9,5,4,1};
vector <string>vals{"M","CM","D","CD","C","XC","L","XL","X","IX","V","IV","I"};
for(int it = 0 ; it < val.size() ; it ++)
{
while(num >= val[it])
{
num -= val[it];
nums += vals[it];
}
}
return nums;
}
};