[LeetCode]题解(python):012-Integer to Roman
题目来源:
https://leetcode.com/problems/integer-to-roman/
题意分析:
这道题是要把在区间[1-3999]的数字转化成罗马数字。
题目思路:
只要知道了罗马数字和阿拉伯数字是怎么转换的就不难了,要注意的是900,500,400,90,50,40,9,5,4分别应该是‘CM’,‘D’,‘CD’,‘XC’,‘L’,‘XL’,‘IX’,‘V’,‘IV’。
代码(python):
class Solution(object):
def intToRoman(self, num):
"""
:type num: int
:rtype: str
"""
a = [1000,900,500,400,100,90,50,40,10,9,5,4,1]
b = ['M','CM','D','CD','C','XC','L','XL','X','IX','V','IV','I']
ans = ''
i = 0
count = 0
while num > 0:
count = num/a[i]
num %= a[i]
while count > 0:
ans += b[i]
count -= 1
i += 1
return ans
转载请注明出处:http://www.cnblogs.com/chruny/p/4817819.html
[LeetCode]题解(python):012-Integer to Roman的更多相关文章
- leetCode练题——12. Integer to Roman
1.题目 12. Integer to Roman Roman numerals are represented by seven different symbols: I, V, X, L, C, ...
- No.012 Integer to Roman
12. Integer to Roman Total Accepted: 71315 Total Submissions: 176625 Difficulty: Medium Given an int ...
- 【LeetCode】12 & 13 - Integer to Roman & Roman to Integer
12 - Integer to Roman Given an integer, convert it to a roman numeral. Input is guaranteed to be wit ...
- LeetCode--No.012 Integer to Roman
12. Integer to Roman Total Accepted: 71315 Total Submissions: 176625 Difficulty: Medium Given an int ...
- 【LeetCode】012. Integer to Roman
Given an integer, convert it to a roman numeral. Input is guaranteed to be within the range from 1 t ...
- 【JAVA、C++】LeetCode 012 Integer to Roman
Given an integer, convert it to a roman numeral. Input is guaranteed to be within the range from 1 t ...
- [Leetcode]012. Integer to Roman
public class Solution { public String intToRoman(int num) { String M[] = {"", "M" ...
- leetcode解决问题的方法||Integer to Roman问题
problem: Given an integer, convert it to a roman numeral. Input is guaranteed to be within the range ...
- leetcode第12题--Integer to Roman
Problem: Given an integer, convert it to a roman numeral. Input is guaranteed to be within the range ...
- 012 Integer to Roman 整数转换成罗马数字
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/ cl ...
随机推荐
- 转:CSS Overflow 属性
原文:CSS Overflow 属性译自:The CSS Overflow Property版权所有,转载请注明出处,多谢!! 根据CSS的盒模型概念,页面中的每个元素,都是一个矩形的盒子.这些盒子的 ...
- Reorder the Books(规律)
Reorder the Books Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 131072/131072 K (Java/Othe ...
- NGUI使用教程(1) 安装NGUI插件
前言 鉴于当前游戏开发的大势,Unity3d的发展势头超乎我的预期,作为一个Flash开发人员,也是为Flash在游戏开发尤其是手游开发中的地位感到担忧....所以 近期一段时间都在自己学习unity ...
- linux线程间同步方式汇总
抽空做了下linux所有线程间同步方式的汇总(原生的),包含以下几个: 1, mutex 2, condition variable 3, reader-writer lock 4, spin loc ...
- 用css3画企鹅
<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <meta na ...
- BZOJ 2337: [HNOI2011]XOR和路径( 高斯消元 )
一位一位考虑异或结果, f(x)表示x->n异或值为1的概率, 列出式子然后高斯消元就行了 --------------------------------------------------- ...
- 51NOD 算法马拉松8
题目戳这里:51NOD算法马拉松8 某天晚上kpm在玩OSU!之余让我看一下B题...然后我就被坑进了51Nod... A.还是01串 水题..怎么乱写应该都可以.记个前缀和然后枚举就行了.时间复杂度 ...
- java 成员访问修饰符
作用域 当前类 当前包(package) 子类 其他包(package) public ok ok ok ok protected ok ok ok no default ok ok no no pr ...
- 磁盘性能,你可能不知道的IOPS计算方法
每个I/O 请求到磁盘都需要若干时间.主要是因为磁盘的盘边必须旋转,机头必须寻道.磁盘的旋转常常被称为”rotational delay”(RD),机头的移动称为”disk seek”(DS).一个I ...
- php知识(第2天)
运算符 PHP中运算符一共分为9类: 赋值运算符, 算术运算符,比较运算符, 逻辑运算符, 错误抑制符, 三目运算符, 位运算符, 自操作运算符, 连接操作符 算术运算符 算术运算: 基本运算符: + ...