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12.intToRoman.cpp
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65 lines (60 loc) · 1.21 KB
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class Solution {
public:
string intToRoman(int num) {
int roman[] = {1,5,10,50,100,500,1000};
string ans = "";
while(num >= 1000) {
num -= 1000;
ans += 'M';
}
if (num >= 900) {
num -= 900;
ans += "CM";
}
if (num >= 500) {
num -= 500;
ans += 'D';
}
if (num >= 400) {
num -= 400;
ans += "CD";
}
while(num>=100) {
num -= 100;
ans += "C";
}
if (num >= 90) {
num -= 90;
ans += "XC";
}
if (num >= 50) {
num -= 50;
ans += 'L';
}
if (num >= 40) {
num -= 40;
ans += "XL";
}
while(num>=10) {
num -= 10;
ans += 'X';
}
if (num >= 9) {
num -= 9;
ans += "IX";
}
if (num >= 5) {
num -= 5;
ans += 'V';
}
if (num >= 4) {
num -= 4;
ans += "IV";
}
while(num>0) {
num -= 1;
ans += 'I';
}
return ans;
}
};