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integer-to-roman(AC).cpp
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integer-to-roman(AC).cpp
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//1CE, 1RE, 1WA, 1AC
class Solution {
public:
string intToRoman(int num) {
// IMPORTANT: Please reset any member data you declared, as
// the same Solution instance will be reused for each test case.
string res;
int a[4];
a[0] = num % 10;
num /= 10;
a[1] = num % 10;
num /= 10;
a[2] = num % 10;
num /= 10;
a[3] = num % 10;
num /= 10;
res = "";
//2WA here..
/*
for(int i = 0; i < 4; ++i){
res += code[i][a[i]];
}
*/
/*
for(int i = 3; i >= 0; ++i){
res += code[i][a[i]];
}
*/
for(int i = 3; i >= 0; --i){
res += code[i][a[i]];
}
return res;
}
private:
const string code[4][10] = {
{"", "I", "II", "III", "IV", "V", "VI", "VII", "VIII", "IX"},
{"", "X", "XX", "XXX", "XL", "L", "LX", "LXX", "LXXX", "XC"},
{"", "C", "CC", "CCC", "CD", "D", "DC", "DCC", "DCCC", "CM"},
{"", "M", "MM", "MMM", "", "", "", "", "", ""}
};
};