Integer to Roman
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Integer to Roman
Given an integer, convert it to a roman numeral.
Input is guaranteed to be within the range from 1 to 3999.
对int值的每一位进行转换，首先建立映射表，再一一进行转换。
class Solution {public:string intToRoman(int num) {string romans[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"}}; string result;int count = 0;while (num>0){int v = num%10;num /= 10;result = romans[count++][v]+result;}return result;}}; 0 0
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