<12> ——Integer to Roman
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12、 Integer to Roman
整数转罗马数字
给定一个整数,将其转换成罗马数字。
返回的结果要求在1-3999的范围内。
罗马数字
罗马数字没有0。
1~9 I,II,III,IV,V,VI,VII,VIII,IX
I、V、X、L、C、D、M
分别表示:1,5,10,50,100,500,1000
代码:
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]; }};
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