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…

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.…

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 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.…

Given an integer, convert it to a roman numeral. Input is guaranteed to be within the range from 1 to 3999. 题解: 观察 1 到 10 :Ⅰ,Ⅱ,Ⅲ,Ⅳ(IIII),Ⅴ,Ⅵ,Ⅶ,Ⅷ,Ⅸ,Ⅹ,Ⅺ 难点在于出现字符不能连续超过三次,以及大数左边至多有一个小数.所以要分情况:1 - 3,4,5 - 8,9.将小数在大数左边的情况摘出来. Solution 1 贪心策略 class Solutio…

Given an integer, convert it to a roman numeral. Input is guaranteed to be within the range from 1 to 3999. 本题思路比较简单,难度主要集中在罗马数字本身,直接贴代码. 思路一,从高位开始: JAVA: static public String intToRoman(int number) { int[] values = { 1000, 900, 500, 400, 100, 90, 50…

public class Solution { public String intToRoman(int num) { String M[] = {"", "M", "MM", "MMM"}; String C[] = {"", "C", "CC", "CCC", "CD", "D", "DC&qu…

problem: Given an integer, convert it to a roman numeral. Input is guaranteed to be within the range from 1 to 3999. 将1-3999的整数转换为罗马数字 thinking: (1) 对比举例 个位数举例 Ⅰ,1 ]Ⅱ.2] Ⅲ,3] Ⅳ,4 ]Ⅴ.5 ]Ⅵ,6]Ⅶ.7] Ⅷ,8 ]Ⅸ.9 ] 十位数举例 Ⅹ.10] Ⅺ,11 ]Ⅻ,12] XIII,13] XIV,14] XV,1…

Problem: Given an integer, convert it to a roman numeral. Input is guaranteed to be within the range from 1 to 3999. 把阿拉伯数字转换为罗马数字输出.百度一下对应的 I V X L C D M,代表1,5,10,50,100,500,1000 然后写一个子函数,输入数字和相应的位数级别,如个位为level 1,千为4.因为最多不会超过四千.所以可以如下.注意了,string用法很好…

给定一个整数,将其转为罗马数字.输入保证在 1 到 3999 之间. 详见:https://leetcode.com/problems/integer-to-roman/description/ class Solution { public: string intToRoman(int num) { string res = ""; char roman[] = { 'M', 'D', 'C', 'L', 'X', 'V', 'I' }; int value[] = { 1000,…