LEETCODE: Integer to Roman
来源:互联网 发布:java文件压缩中文乱码 编辑:程序博客网 时间:2024/06/06 09:40
知道了罗马数字之后就很简单了。
class Solution {public: const 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 intToRoman(int num) { string res; int digit = 0; while(num != 0){ res = romans[digit][num % 10] + res; digit ++; num /= 10; } return res; }};
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