Given an integer, convert it to a roman numeral. Input is guaranteed to be within the range from 1 to 3999. 思路:罗马数字共有七个,即I(1),V(5),X(10),L(50),C(100),D(500),M(1000). 第一步,按照千分位,百分位...一一算下来. class Solution { public: string intToRoman(int num) { int quo…

12.Integer to Roman Given an integer, convert it to a roman numeral. Input is guaranteed to be within the range from 1 to 3999. 拿到题目,分析,比较简单,除掉相应的基数单位,拼接起来就可以,不过要注意4,9这些特殊的表示. 先上我的代码吧: public String intToRoman(int num){ StringBuffer sb=new StringBuff…

12. Integer to Roman Medium Roman numerals are represented by seven different symbols: I, V, X, L, C, D and M. Symbol Value I 1 V 5 X 10 L 50 C 100 D 500 M 1000 For example, two is written as II in Roman numeral, just two one's added together. Twelve…

1.题目 12. Integer to Roman Roman numerals are represented by seven different symbols: I, V, X, L, C, D and M. Symbol Value I 1 V 5 X 10 L 50 C 100 D 500 M 1000 For example, two is written as II in Roman numeral, just two one's added together. Twelve i…

我现在在做一个叫<leetbook>的免费开源书项目,力求提供最易懂的中文思路,目前把解题思路都同步更新到gitbook上了,需要的同学可以去看看 书的地址:https://hk029.gitbooks.io/leetbook/ 012. Integer to Roman[M] 问题 Given an integer, convert it to a roman numeral. Input is guaranteed to be within the range from 1 to 3999…

Integer to Roman Given an integer, convert it to a roman numeral. Input is guaranteed to be within the range from 1 to 3999. 逐区间做处理. 解法一:非递归 class Solution { public: string intToRoman(int num) { string ret; //M<-->1000 ) { ret += 'M'; num -= ; } //t…

Given an integer, convert it to a roman numeral. Input is guaranteed to be within the range from 1 to 3999. 解释: 罗马数字采用七个罗马字母作数字.即Ⅰ(1).X(10).C(100).M(1000).V(5).L(50).D(500).记数的方法: 相同的数字连写,所表示的数等于这些数字相加得到的数,如 Ⅲ=3: 小的数字在大的数字的右边,所表示的数等于这些数字相加得到的数,如 Ⅷ=8.…

Roman numerals are represented by seven different symbols: I, V, X, L, C, D and M. Symbol Value I 1 V 5 X 10 L 50 C 100 D 500 M 1000 For example, two is written as II in Roman numeral, just two one's added together. Twelve is written as, XII, which i…

Given an integer, convert it to a roman numeral. Input is guaranteed to be within the range from 1 to 3999. 代码如下: public class Solution { public String intToRoman(int num) { int n=0; int[] nums={1000,500,100,50,10,5,1}; Map<Integer,String> map=new H…

题目: Given an integer, convert it to a roman numeral. Input is guaranteed to be within the range from 1 to 3999. 思路: 主要是了解罗马数和阿拉伯数字的对应关系,如下表: 由这个表基本上可以将1-3999范围的阿拉伯数字换成罗马数字.在处理阿拉伯数字时从高位开始匹配,将每个位的值找出对应罗马数字,串成字符串即可. public class Solution { public String…