012_LeetCode_12 Integer to Roman 题解

Description

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Given an integer, convert it to a roman numeral.

Input is guaranteed to be within the range from 1 to 3999.

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将一个整数转换成罗马数字。

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tips:

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罗马数字表示如下：1 -> I, 5 -> V, 10 -> X, 50 -> L, 100 -> C, 500 -> D, 1000 -> M.

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解：

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数字最大不到4000，直接打表，岂不是。。。。。。。。。。。。。。

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java代码：

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class Solution {    public String intToRoman(int num) {        String M[] = {"", "M", "MM", "MMM"};        String C[] = {"", "C", "CC", "CCC", "CD", "D", "DC", "DCC", "DCCC", "CM"};        String X[] = {"", "X", "XX", "XXX", "XL", "L", "LX", "LXX", "LXXX", "XC"};        String I[] = {"", "I", "II", "III", "IV", "V", "VI", "VII", "VIII", "IX"};        return M[num/1000] + C[(num%1000)/100]+ X[(num%100)/10] + I[num%10];    }}