class Solution(object): def intToRoman(self, num): """ :type num: int :rtype: str """ if num > 3999 or num < 1: return "" values = [1000,900,500,400,100,90,50,40,10,9,5,4,1] numerals = ["M","CM&…
Integer to Roman Given an integer, convert it to a roman numeral. Input is guaranteed to be within the range from 1 to 3999. SOLUTION 1: 从大到小的贪心写法.从大到小匹配,尽量多地匹配当前的字符. 罗马数字对照表: http://literacy.kent.edu/Minigrants/Cinci/romanchart.htm package Algorithm…
Given an integer, convert it to a roman numeral. Input is guaranteed to be within the range from 1 to 3999. 之前那篇文章写的是罗马数字转化成整数(http://www.cnblogs.com/grandyang/p/4120857.html), 这次变成了整数转化成罗马数字,基本算法还是一样.由于题目中限定了输入数字的范围(1 - 3999), 使得题目变得简单了不少. 基本字符 I V…
Given an integer, convert it to a roman numeral. Input is guaranteed to be within the range from 1 to 3999. , , , , ,, , , , , , , }; string romans[]={"M", "CM", "D", "CD", "C", "XC", "L&quo…
Description: Given an integer, convert it to a roman numeral. Input is guaranteed to be within the range from 1 to 3999. noting to say. public class Solution { public String intToRoman(int number) { int[] values = {1000, 900, 500, 400, 100, 90, 50, 4…
# -*- coding: utf8 -*-'''__author__ = 'dabay.wang@gmail.com'https://oj.leetcode.com/problems/integer-to-roman/Integer to Roman Given an integer, convert it to a roman numeral. Input is guaranteed to be within the range from 1 to 3999.===Comments by D…
作者: 负雪明烛 id: fuxuemingzhu 个人博客:http://fuxuemingzhu.cn/ 个人公众号:负雪明烛 本文关键词:roman, 罗马数字,题解,leetcode, 力扣,Python, C++, Java 目录 题目描述 题目大意 解题方法 日期 题目描述 Roman numerals are represented by seven different symbols: I, V, X, L, C, D and M. Symbol Value I 1 V 5 X…
Given an integer, convert it to a roman numeral. Input is guaranteed to be within the range from 1 to 3999. 给定一个整数,将他转换到罗马字符.同样这里的罗马字符不会超过1000(M),PS:关于罗马字符的介绍看我的这篇文章 :LeetCode OJ:Roman to Integer(转换罗马字符到整数) 这里的大体思路是这样的,例如对于罗马字符952来说,起答题的可以分成三个组成部分, 就…
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…
Roman to Integer Given a roman numeral, convert it to an integer. Input is guaranteed to be within the range from 1 to 3999. 首先学习一下罗马数字的规则: 羅馬數字共有7個,即I(1).V(5).X(10).L(50).C(100).D(500)和M(1000).按照下述的規則可以表示任意正整數.需要注意的是罗马数字中没有“0”,與進位制無關.一般認為羅馬數字只用來記數,而…
Integer to Roman Given an integer, convert it to a roman numeral. Input is guaranteed to be within the range from 1 to 3999. 罗马数字的组数规则,有几条须注意掌握:(1)基本数字Ⅰ.X .C 中的任何一个,自身连用构成数目,或者放在大数的右边连用构成数目,都不能超过三个:放在大数的左边只能用一个.(2)不能把基本数字 V .L .D 中的任何一个作为小数放在大数的左边采…
Roman to Integer Given a roman numeral, convert it to an integer. Input is guaranteed to be within the range from 1 to 3999. 思路:首先要学一下罗马数字是怎么表示的,参见百度百科 其实看了上面罗马数字的介绍,可以建一个对应表 把数字和字母对应起来.遇到 I X C且后面字母的数字更大时 减去当前数字,否则加上. int romanToInt(string s) { ; ];…
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. Solution: 枚举,考虑每个字符以及每两个字符的组合 1 class Solution { 2 public: 3 string intToRoman(int num) { //runtime:28ms 4 string ret; 5…
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…
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…
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…
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…
Given an integer, convert it to a roman numeral. The number is guaranteed to be within the range from 1 to 3999. Have you met this question in a real interview? Clarification What is Roman Numeral? https://en.wikipedia.org/wiki/Roman_numerals htt…
Integer to Roman Given an integer, convert it to a roman numeral. Input is guaranteed to be within the range from 1 to 3999. 意思就是: 给出一个整数 num( 0<=num<=3999),返回其对应的罗马数字表示: 罗马数字有: I V X L C D M 1 5 10 50 100 500 1000 Math String Solutions 1 Integer to…
Roman chart: http://literacy.kent.edu/Minigrants/Cinci/romanchart.htm Integer to Roman Given an integer, convert it to a roman numeral. Input is guaranteed to be within the range from 1 to 3999. 解析:只有数字为 9 和 4 时,取一个小数放在左边.(把数字为 9 和 4 时的罗马符号看作一个原子,避免取…
12. Integer to Roman Total Accepted: 71315 Total Submissions: 176625 Difficulty: Medium Given an integer, convert it to a roman numeral. Input is guaranteed to be within the range from 1 to 3999. 思路: 首先,我们得弄清楚罗马数字的计数方式.根据维基百科的介绍:https://zh.wikipedia.…
一.Roman to Integer Given a roman numeral, convert it to an integer. Input is guaranteed to be within the range from 1 to 3999. 罗马数字是阿拉伯数字传入之前使用的一种数码.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…
12. Integer to Roman Total Accepted: 71315 Total Submissions: 176625 Difficulty: Medium Given an integer, convert it to a roman numeral. Input is guaranteed to be within the range from 1 to 3999. 思路: 首先,我们得弄清楚罗马数字的计数方式.根据维基百科的介绍:https://zh.wikipedia.…
